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Re-license almost all of libVLC and libVLCcore to LGPLv2.1+ This move was authorized by the developers, either: - by e-mail, - by vote at the VideoLAN Dev Days 2011, - on the license website, - in a contract, oral or written. No objection was raised, so far. The developers agreeing are: Justus Piater Alexis Ballier Alexander Bethke Mohammed Adnène Trojette Alex Converse Alexey Sokolov Alexis de Lattre Andre Pang Anthony Loiseau Cyril Deguet André Weber Boris Dorès Brieuc Jeunhomme Benjamin Drung Hugo Beauzée-Luyssen Benoit Steiner Benjamin Pracht Bernie Purcell Przemyslaw Fiala Arnaud de Bossoreille de Ribou Brad Smith Nick Briggs Christopher Rath Christophe Courtaut Christopher Mueller Clement Chesnin Andres Krapf Damien Fouilleul David Flynn Sebastien Zwickert Antoine Cellerier Jérôme Decoodt Jérome Decoodt Dylan Yudaken Eduard Babayan Eugenio Jarosiewicz Elliot Murphy Eric Petit Erwan Tulou Etienne Membrives Ludovic Fauvet Fabio Ritrovato Tobias Güntner Jakub Wieczorek Frédéric Crozat Francois Cartegnie Laurent Aimar Florian G. Pflug Felix Paul Kühne Frank Enderle Rafaël Carré Simon Latapie Gildas Bazin Geoffroy Couprie Julien / Gellule Gildas Bazin Arnaud Schauly Toralf Niebuhr Vicente Jimenez Aguilar Derk-Jan Hartman Henri Fallon Ilkka Ollakka Olivier Teulière Rémi Duraffort Jakob Leben Jean-Baptiste Kempf Jean-Paul Saman Jean-Philippe Grimaldi Jean-François Massol Gaël Hendryckx Jakob Leben Jean-Marc Dressler Jai Menon Johan Bilien Johann Ransay Joris van Rooij JP Dinger Jean-Philippe André Adrien Grand Juha Jeronen Juho Vähä-Herttua Kaarlo Raiha Kaarlo Raiha Kamil Baldyga Keary Griffin Ken Self KO Myung-Hun Pierre Ynard Filippo Carone Loïc Minier Luca Barbato Lucas C. Villa Real Lukas Durfina Adrien Maglo Marc Ariberti Mark Lee Mark Moriarty Martin Storsjö Christophe Massiot Michel Kaempf Marian Ďurkovič Mirsal Ennaime Carlo Calabrò Damien Lucas Naohiro Koriyama Basos G Pierre Baillet Vincent Penquerc'h Olivier Aubert Pankaj Yadav Paul Corke Pierre d'Herbemont Philippe Morin Antoine Lejeune Michael Ploujnikov Jean-Marc Dressler Michael Hanselmann Rafaël Carré Ramiro Polla Rémi Denis-Courmont Renaud Dartus Richard Shepherd Faustino Osuna Arnaud Vallat Rob Jonson Robert Jedrzejczyk Steve Lhomme Rocky Bernstein Romain Goyet Rov Juvano Sam Hocevar Martin T. H. Sandsmark Sebastian Birk Sébastien Escudier Vincent Seguin Fabio Ritrovato Sigmund Augdal Helberg Casian Andrei Srikanth Raju Hannes Domani Stéphane Borel Stephan Krempel Stephan Assmus Tony Castley Pavlov Konstantin Eric Petit Tanguy Krotoff Dennis van Amerongen Michel Lespinasse Can Wu Xavier Marchesini Sébastien Toque Christophe Mutricy Yoann Peronneau Yohann Martineau Yuval Tze Scott Caudle Clément Stenac It is possible, that some minor piece of code was badly tracked, for some reasons (SVN, mainly) or that some small developers did not answer. However, as an "œuvre collective", defined as in "CPI 113-2 alinéa 3", and seeing "Cour. Cass. 17 Mai 1978", and seeing that the editor and the very vast majority of developers have agreed (> 99.99% of the code, > 99% of developers), we are fine here.
441 lines
14 KiB
C
441 lines
14 KiB
C
/*****************************************************************************
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* vlc_vout_display.h: vout_display_t definitions
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*****************************************************************************
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* Copyright (C) 2009 Laurent Aimar
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* $Id$
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*
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* Authors: Laurent Aimar <fenrir _AT_ videolan _DOT_ org>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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#ifndef VLC_VOUT_DISPLAY_H
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#define VLC_VOUT_DISPLAY_H 1
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/**
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* \file
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* This file defines vout display structures and functions in vlc
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*/
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#include <vlc_es.h>
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#include <vlc_picture.h>
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#include <vlc_picture_pool.h>
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#include <vlc_subpicture.h>
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#include <vlc_keys.h>
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#include <vlc_mouse.h>
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#include <vlc_vout_window.h>
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/* XXX
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* Do NOT use video_format_t::i_aspect but i_sar_num/den everywhere. i_aspect
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* will be removed as soon as possible.
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*
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*/
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typedef struct vout_display_t vout_display_t;
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typedef struct vout_display_sys_t vout_display_sys_t;
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typedef struct vout_display_owner_t vout_display_owner_t;
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typedef struct vout_display_owner_sys_t vout_display_owner_sys_t;
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/**
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* Possible alignments for vout_display.
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*/
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typedef enum
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{
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VOUT_DISPLAY_ALIGN_CENTER,
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/* */
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VOUT_DISPLAY_ALIGN_LEFT,
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VOUT_DISPLAY_ALIGN_RIGHT,
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/* */
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VOUT_DISPLAY_ALIGN_TOP,
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VOUT_DISPLAY_ALIGN_BOTTOM,
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} vout_display_align_t;
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/**
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* Window management state.
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*/
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enum {
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VOUT_WINDOW_STATE_NORMAL=0,
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VOUT_WINDOW_STATE_ABOVE=1,
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VOUT_WINDOW_STATE_BELOW=2,
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VOUT_WINDOW_STACK_MASK=3,
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};
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/**
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* Initial/Current configuration for a vout_display_t
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*/
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typedef struct {
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bool is_fullscreen; /* Is the display fullscreen */
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/* Display properties */
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struct {
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/* Window title (may be NULL) */
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const char *title;
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/* Display size */
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unsigned width;
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unsigned height;
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/* Display SAR */
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struct {
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unsigned num;
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unsigned den;
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} sar;
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} display;
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/* Alignment of the picture inside the display */
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struct {
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int horizontal;
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int vertical;
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} align;
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/* Do we fill up the display with the video */
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bool is_display_filled;
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/* Zoom to use
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* It will be applied to the whole display if b_display_filled is set, otherwise
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* only on the video source */
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struct {
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int num;
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int den;
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} zoom;
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} vout_display_cfg_t;
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/**
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* Information from a vout_display_t to configure
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* the core behaviour.
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*
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* By default they are all false or NULL.
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*
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*/
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typedef struct {
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bool is_slow; /* The picture memory has slow read/write */
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bool has_double_click; /* Is double-click generated */
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bool has_hide_mouse; /* Is mouse automatically hidden */
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bool has_pictures_invalid; /* Will VOUT_DISPLAY_EVENT_PICTURES_INVALID be used */
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bool has_event_thread; /* Will events (key at least) be emitted using an independent thread */
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const vlc_fourcc_t *subpicture_chromas; /* List of supported chromas for subpicture rendering. */
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} vout_display_info_t;
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/**
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* Control query for vout_display_t
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*/
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enum {
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/* Hide the mouse. It will be sent when
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* vout_display_t::info.b_hide_mouse is false */
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VOUT_DISPLAY_HIDE_MOUSE,
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/* Ask to reset the internal buffers after a VOUT_DISPLAY_EVENT_PICTURES_INVALID
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* request.
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*/
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VOUT_DISPLAY_RESET_PICTURES,
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/* Ask the module to acknowledge/refuse the fullscreen state change after
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* being requested (externally or by VOUT_DISPLAY_EVENT_FULLSCREEN */
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VOUT_DISPLAY_CHANGE_FULLSCREEN, /* const vout_display_cfg_t *p_cfg */
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/* Ask the module to acknowledge/refuse the window management state change
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* after being requested externally or by VOUT_DISPLAY_WINDOW_STATE */
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VOUT_DISPLAY_CHANGE_WINDOW_STATE, /* unsigned state */
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/* Ask the module to acknowledge/refuse the display size change requested
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* (externally or by VOUT_DISPLAY_EVENT_DISPLAY_SIZE) */
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VOUT_DISPLAY_CHANGE_DISPLAY_SIZE, /* const vout_display_cfg_t *p_cfg, int is_forced */
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/* Ask the module to acknowledge/refuse fill display state change after
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* being requested externally */
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VOUT_DISPLAY_CHANGE_DISPLAY_FILLED, /* const vout_display_cfg_t *p_cfg */
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/* Ask the module to acknowledge/refuse zoom change after being requested
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* externally */
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VOUT_DISPLAY_CHANGE_ZOOM, /* const vout_display_cfg_t *p_cfg */
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/* Ask the module to acknowledge/refuse source aspect ratio after being
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* requested externally */
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VOUT_DISPLAY_CHANGE_SOURCE_ASPECT, /* const video_format_t *p_source */
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/* Ask the module to acknowledge/refuse source crop change after being
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* requested externally.
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* The cropping requested is stored by video_format_t::i_x/y_offset and
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* video_format_t::i_visible_width/height */
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VOUT_DISPLAY_CHANGE_SOURCE_CROP, /* const video_format_t *p_source */
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/* Ask an opengl interface if available. */
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VOUT_DISPLAY_GET_OPENGL, /* vlc_gl_t ** */
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};
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/**
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* Event from vout_display_t
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*
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* Events modifiying the state may be sent multiple times.
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* Only the transition will be retained and acted upon.
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*/
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enum {
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/* TODO:
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* ZOOM ? DISPLAY_FILLED ? ON_TOP ?
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*/
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/* */
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VOUT_DISPLAY_EVENT_PICTURES_INVALID, /* The buffer are now invalid and need to be changed */
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VOUT_DISPLAY_EVENT_FULLSCREEN,
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VOUT_DISPLAY_EVENT_WINDOW_STATE,
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VOUT_DISPLAY_EVENT_DISPLAY_SIZE, /* The display size need to change : int i_width, int i_height, bool is_fullscreen */
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/* */
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VOUT_DISPLAY_EVENT_CLOSE,
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VOUT_DISPLAY_EVENT_KEY,
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/* Full mouse state.
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* You can use it OR use the other mouse events. The core will do
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* the conversion.
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*/
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VOUT_DISPLAY_EVENT_MOUSE_STATE,
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/* Mouse event */
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VOUT_DISPLAY_EVENT_MOUSE_MOVED,
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VOUT_DISPLAY_EVENT_MOUSE_PRESSED,
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VOUT_DISPLAY_EVENT_MOUSE_RELEASED,
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VOUT_DISPLAY_EVENT_MOUSE_DOUBLE_CLICK,
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};
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/**
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* Vout owner structures
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*/
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struct vout_display_owner_t {
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/* Private place holder for the vout_display_t creator
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*/
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vout_display_owner_sys_t *sys;
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/* Event coming from the module
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*
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* This function is set prior to the module instantiation and must not
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* be overwritten nor used directly (use the vout_display_SendEvent*
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* wrapper.
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*
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* You can send it at any time i.e. from any vout_display_t functions or
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* from another thread.
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* Be careful, it does not ensure correct serialization if it is used
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* from multiple threads.
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*/
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void (*event)(vout_display_t *, int, va_list);
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/* Window management
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*
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* These functions are set prior to the module instantiation and must not
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* be overwritten nor used directly (use the vout_display_*Window
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* wrapper */
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vout_window_t *(*window_new)(vout_display_t *, const vout_window_cfg_t *);
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void (*window_del)(vout_display_t *, vout_window_t *);
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};
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struct vout_display_t {
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VLC_COMMON_MEMBERS
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/* Module */
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module_t *module;
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/* Initial and current configuration.
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* You cannot modify it directly, you must use the appropriate events.
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*
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* It reflects the current values, i.e. after the event has been accepted
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* and applied/configured if needed.
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*/
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const vout_display_cfg_t *cfg;
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/* video source format.
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*
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* Cropping is not requested while in the open function.
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* You cannot change it.
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*/
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video_format_t source;
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/* picture_t format.
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*
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* You can only change it inside the module open function to
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* match what you want, and when a VOUT_DISPLAY_RESET_PICTURES control
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* request is made and succeeds.
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*
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* By default, it is equal to ::source except for the aspect ratio
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* which is undefined(0) and is ignored.
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*/
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video_format_t fmt;
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/* Information
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*
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* You can only set them in the open function.
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*/
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vout_display_info_t info;
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/* Return a pointer over the current picture_pool_t* (mandatory).
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*
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* For performance reasons, it is best to provide at least count
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* pictures but it is not mandatory.
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* You can return NULL when you cannot/do not want to allocate
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* pictures.
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* The vout display module keeps the ownership of the pool and can
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* destroy it only when closing or on invalid pictures control.
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*/
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picture_pool_t *(*pool)(vout_display_t *, unsigned count);
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/* Prepare a picture and an optional subpicture for display (optional).
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*
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* It is called before the next pf_display call to provide as much
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* time as possible to prepare the given picture and the subpicture
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* for display.
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* You are guaranted that pf_display will always be called and using
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* the exact same picture_t and subpicture_t.
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* You cannot change the pixel content of the picture_t or of the
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* subpicture_t.
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*/
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void (*prepare)(vout_display_t *, picture_t *, subpicture_t *);
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/* Display a picture and an optional subpicture (mandatory).
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*
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* The picture and the optional subpicture must be displayed as soon as
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* possible.
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* You cannot change the pixel content of the picture_t or of the
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* subpicture_t.
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*
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* This function gives away the ownership of the picture and of the
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* subpicture, so you must release them as soon as possible.
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*/
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void (*display)(vout_display_t *, picture_t *, subpicture_t *);
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/* Control on the module (mandatory) */
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int (*control)(vout_display_t *, int, va_list);
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/* Manage pending event (optional) */
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void (*manage)(vout_display_t *);
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/* Private place holder for the vout_display_t module (optional)
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*
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* A module is free to use it as it wishes.
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*/
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vout_display_sys_t *sys;
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/* Reserved for the vout_display_t owner.
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*
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* It must not be overwritten nor used directly by a module.
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*/
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vout_display_owner_t owner;
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};
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static inline void vout_display_SendEvent(vout_display_t *vd, int query, ...)
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{
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va_list args;
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va_start(args, query);
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vd->owner.event(vd, query, args);
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va_end(args);
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}
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static inline void vout_display_SendEventDisplaySize(vout_display_t *vd, int width, int height, bool is_fullscreen)
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{
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vout_display_SendEvent(vd, VOUT_DISPLAY_EVENT_DISPLAY_SIZE, width, height, is_fullscreen);
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}
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static inline void vout_display_SendEventPicturesInvalid(vout_display_t *vd)
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{
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vout_display_SendEvent(vd, VOUT_DISPLAY_EVENT_PICTURES_INVALID);
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}
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static inline void vout_display_SendEventClose(vout_display_t *vd)
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{
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vout_display_SendEvent(vd, VOUT_DISPLAY_EVENT_CLOSE);
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}
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static inline void vout_display_SendEventKey(vout_display_t *vd, int key)
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{
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vout_display_SendEvent(vd, VOUT_DISPLAY_EVENT_KEY, key);
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}
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static inline void vout_display_SendEventFullscreen(vout_display_t *vd, bool is_fullscreen)
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{
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vout_display_SendEvent(vd, VOUT_DISPLAY_EVENT_FULLSCREEN, is_fullscreen);
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}
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static inline void vout_display_SendWindowState(vout_display_t *vd, unsigned state)
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{
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vout_display_SendEvent(vd, VOUT_DISPLAY_EVENT_WINDOW_STATE, state);
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}
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/* The mouse position (State and Moved event) must be expressed against vout_display_t::source unit */
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static inline void vout_display_SendEventMouseState(vout_display_t *vd, int x, int y, int button_mask)
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{
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vout_display_SendEvent(vd, VOUT_DISPLAY_EVENT_MOUSE_STATE, x, y, button_mask);
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}
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static inline void vout_display_SendEventMouseMoved(vout_display_t *vd, int x, int y)
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{
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vout_display_SendEvent(vd, VOUT_DISPLAY_EVENT_MOUSE_MOVED, x, y);
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}
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static inline void vout_display_SendEventMousePressed(vout_display_t *vd, int button)
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{
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vout_display_SendEvent(vd, VOUT_DISPLAY_EVENT_MOUSE_PRESSED, button);
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}
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static inline void vout_display_SendEventMouseReleased(vout_display_t *vd, int button)
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{
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vout_display_SendEvent(vd, VOUT_DISPLAY_EVENT_MOUSE_RELEASED, button);
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}
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static inline void vout_display_SendEventMouseDoubleClick(vout_display_t *vd)
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{
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vout_display_SendEvent(vd, VOUT_DISPLAY_EVENT_MOUSE_DOUBLE_CLICK);
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}
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/**
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* Asks for a new window with the given configuration as hint.
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*
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* b_standalone/i_x/i_y may be overwritten by the core
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*/
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static inline vout_window_t *vout_display_NewWindow(vout_display_t *vd, const vout_window_cfg_t *cfg)
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{
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return vd->owner.window_new(vd, cfg);
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}
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/**
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* Deletes a window created by vout_display_NewWindow if window is non NULL
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* or any unused windows otherwise.
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*/
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static inline void vout_display_DeleteWindow(vout_display_t *vd,
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vout_window_t *window)
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{
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vd->owner.window_del(vd, window);
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}
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/**
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* Computes the default display size given the source and
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* the display configuration.
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*
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* This asssumes that the picture is already cropped.
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*/
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VLC_API void vout_display_GetDefaultDisplaySize(unsigned *width, unsigned *height, const video_format_t *source, const vout_display_cfg_t *);
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/**
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* Structure used to store the result of a vout_display_PlacePicture.
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*/
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typedef struct {
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int x;
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int y;
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unsigned width;
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unsigned height;
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} vout_display_place_t;
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/**
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* Computes how to place a picture inside the display to respect
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* the given parameters.
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* This assumes that cropping is done by an external mean.
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*
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* \param p_place Place inside the window (window pixel unit)
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* \param p_source Video source format
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* \param p_cfg Display configuration
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* \param b_clip If true, prevent the video to go outside the display (break zoom).
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*/
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VLC_API void vout_display_PlacePicture(vout_display_place_t *place, const video_format_t *source, const vout_display_cfg_t *cfg, bool do_clipping);
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#endif /* VLC_VOUT_DISPLAY_H */
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