display.c 41.7 KB
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/*****************************************************************************
 * display.c: "vout display" managment
 *****************************************************************************
 * Copyright (C) 2009 Laurent Aimar
 * $Id$
 *
 * Authors: Laurent Aimar <fenrir _AT_ videolan _DOT_ 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 <assert.h>

#include <vlc_common.h>
#include <vlc_video_splitter.h>
#include <vlc_vout_display.h>
#include <vlc_vout.h>

#include <libvlc.h>

#include "display.h"

#include "event.h"

static void SplitterClose(vout_display_t *vd);

/*****************************************************************************
 * FIXME/TODO see how to have direct rendering here (interact with vout.c)
 *****************************************************************************/
static picture_t *VideoBufferNew(filter_t *filter)
{
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    vout_display_t *vd = (vout_display_t*)filter->p_owner;
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    const video_format_t *fmt = &filter->fmt_out.video;

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    assert(vd->fmt.i_chroma == fmt->i_chroma &&
           vd->fmt.i_width  == fmt->i_width  &&
           vd->fmt.i_height == fmt->i_height);

    return vout_display_Get(vd);
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}
static void VideoBufferDelete(filter_t *filter, picture_t *picture)
{
    VLC_UNUSED(filter);
    picture_Release(picture);
}

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static int  FilterAllocationInit(filter_t *filter, void *vd)
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{
    filter->pf_vout_buffer_new = VideoBufferNew;
    filter->pf_vout_buffer_del = VideoBufferDelete;
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    filter->p_owner            = vd;
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    return VLC_SUCCESS;
}
static void FilterAllocationClean(filter_t *filter)
{
    filter->pf_vout_buffer_new = NULL;
    filter->pf_vout_buffer_del = NULL;
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    filter->p_owner            = NULL;
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}

/*****************************************************************************
 *
 *****************************************************************************/

/**
 * It creates a new vout_display_t using the given configuration.
 */
static vout_display_t *vout_display_New(vlc_object_t *obj,
                                        const char *module, bool load_module,
                                        const video_format_t *fmt,
                                        const vout_display_cfg_t *cfg,
                                        vout_display_owner_t *owner)
{
    /* */
    vout_display_t *vd = vlc_object_create(obj, sizeof(*vd));

    /* */
    video_format_Copy(&vd->source, fmt);

    /* Picture buffer does not have the concept of aspect ratio */
    video_format_Copy(&vd->fmt, fmt);
    vd->fmt.i_aspect = 0;
    vd->fmt.i_sar_num = 0;
    vd->fmt.i_sar_den = 0;

    vd->info.is_slow = false;
    vd->info.has_double_click = false;
    vd->info.has_hide_mouse = false;
    vd->info.has_pictures_invalid = false;

    vd->cfg = cfg;
    vd->get = NULL;
    vd->prepare = NULL;
    vd->display = NULL;
    vd->control = NULL;
    vd->manage = NULL;
    vd->sys = NULL;

    vd->owner = *owner;

    vlc_object_attach(vd, obj);

    if (load_module) {
        vd->module = module_need(vd, "vout display", module, module && *module != '\0');
        if (!vd->module) {
            vlc_object_detach(vd);
            vlc_object_release(vd);
            return NULL;
        }
    } else {
        vd->module = NULL;
    }
    return vd;
}

/**
 * It deletes a vout_display_t
 */
static void vout_display_Delete(vout_display_t *vd)
{
    vlc_object_detach(vd);

    if (vd->module)
        module_unneed(vd, vd->module);

    vlc_object_release(vd);
}

/**
 * It controls a vout_display_t
 */
static int vout_display_Control(vout_display_t *vd, int query, ...)
{
    va_list args;
    int result;

    va_start(args, query);
    result = vd->control(vd, query, args);
    va_end(args);

    return result;
}
static void vout_display_Manage(vout_display_t *vd)
{
    vd->manage(vd);
}

/* */
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void vout_display_GetDefaultDisplaySize(unsigned *width, unsigned *height,
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                                        const video_format_t *source,
                                        const vout_display_cfg_t *cfg)
{
    if (cfg->display.width > 0 && cfg->display.height > 0) {
        *width  = cfg->display.width;
        *height = cfg->display.height;
    } else if (cfg->display.width > 0) {
        *width  = cfg->display.width;
        *height = (int64_t)source->i_visible_height * source->i_sar_den * cfg->display.width * cfg->display.sar.num /
            source->i_visible_width / source->i_sar_num / cfg->display.sar.den;
    } else if (cfg->display.height > 0) {
        *width  = (int64_t)source->i_visible_width * source->i_sar_num * cfg->display.height * cfg->display.sar.den /
            source->i_visible_height / source->i_sar_den / cfg->display.sar.num;
        *height = cfg->display.height;
    } else if (source->i_sar_num >= source->i_sar_den) {
        *width  = (int64_t)source->i_visible_width * source->i_sar_num * cfg->display.sar.den / source->i_sar_den / cfg->display.sar.num;
        *height = source->i_visible_height;
    } else {
        *width  = source->i_visible_width;
        *height = (int64_t)source->i_visible_height * source->i_sar_den * cfg->display.sar.num / source->i_sar_num / cfg->display.sar.den;
    }

    *width  = *width  * cfg->zoom.num / cfg->zoom.den;
    *height = *height * cfg->zoom.num / cfg->zoom.den;
}

/* */
void vout_display_PlacePicture(vout_display_place_t *place,
                               const video_format_t *source,
                               const vout_display_cfg_t *cfg,
                               bool do_clipping)
{
    /* */
    memset(place, 0, sizeof(*place));
    if (cfg->display.width <= 0 || cfg->display.height <= 0)
        return;

    /* */
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    unsigned width;
    unsigned height;
    unsigned display_width;
    unsigned display_height;
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    if (cfg->is_display_filled) {
        width  = source->i_visible_width;
        height = source->i_visible_height;
        display_width  = cfg->display.width;
        display_height = cfg->display.height;
    } else {
        vout_display_cfg_t cfg_tmp = *cfg;

        cfg_tmp.display.width  = 0;
        cfg_tmp.display.height = 0;
        vout_display_GetDefaultDisplaySize(&width, &height,
                                           source, &cfg_tmp);

        display_width  = width;
        display_height = height;
        if (do_clipping) {
            display_width  = __MIN(display_width,  cfg->display.width);
            display_height = __MIN(display_height, cfg->display.height);
        }
    }

    /* Compute the height if we use the width to fill up display_width */
    const int64_t scaled_height = (int64_t)height * display_width  * cfg->display.sar.num * source->i_sar_den / width  / source->i_sar_num / cfg->display.sar.den;
    /* And the same but switching width/height */
    const int64_t scaled_width  = (int64_t)width  * display_height * cfg->display.sar.den * source->i_sar_num / height / source->i_sar_den / cfg->display.sar.num;

    /* We keep the solution that avoid filling outside the display */
    if (scaled_width <= cfg->display.width) {
        place->width  = scaled_width;
        place->height = display_height;
    } else {
        place->width  = display_width;
        place->height = scaled_height;
    }

    /*  Compute position */
    switch (cfg->align.horizontal) {
    case VOUT_DISPLAY_ALIGN_LEFT:
        place->x = 0;
        break;
    case VOUT_DISPLAY_ALIGN_RIGHT:
        place->x = cfg->display.width - place->width;
        break;
    default:
        place->x = (cfg->display.width - place->width) / 2;
        break;
    }

    switch (cfg->align.vertical) {
    case VOUT_DISPLAY_ALIGN_TOP:
        place->y = 0;
        break;
    case VOUT_DISPLAY_ALIGN_BOTTOM:
        place->y = cfg->display.height - place->height;
        break;
    default:
        place->y = (cfg->display.height - place->height) / 2;
        break;
    }
}

struct vout_display_owner_sys_t {
    vout_thread_t   *vout;
    bool            is_wrapper;  /* Is the current display a wrapper */
    vout_display_t  *wrapper; /* Vout display wrapper */

    /* mouse state */
    struct {
        vlc_mouse_t state;

        mtime_t last_pressed;
        mtime_t last_moved;
        bool    is_hidden;

        /* */
        mtime_t double_click_timeout;
        mtime_t hide_timeout;
    } mouse;

    /* */
    vout_display_cfg_t cfg;
    bool     is_on_top_initial;
    struct {
        unsigned num;
        unsigned den;
    } sar_initial;

    /* */
    int  width_saved;
    int  height_saved;

    struct {
        unsigned num;
        unsigned den;
    } crop_saved;

    /* */
    bool reset_pictures;

    bool ch_fullscreen;
    bool is_fullscreen;

    bool ch_display_size;
    int  display_width;
    int  display_height;

    bool ch_display_filled;
    bool is_display_filled;

    bool ch_zoom;
    struct {
        int  num;
        int  den;
    } zoom;

    bool ch_on_top;
    bool is_on_top;

    bool ch_sar;
    struct {
        unsigned num;
        unsigned den;
    } sar;

    bool ch_crop;
    struct {
        unsigned x;
        unsigned y;
        unsigned width;
        unsigned height;
        unsigned num;
        unsigned den;
    } crop;

    /* */
    video_format_t source;
    filter_chain_t *filters;
};

static void VoutDisplayCreateRender(vout_display_t *vd)
{
    vout_display_owner_sys_t *osys = vd->owner.sys;

    osys->filters = NULL;

    video_format_t v_src = vd->source;
    v_src.i_aspect  = 0;
    v_src.i_sar_num = 0;
    v_src.i_sar_den = 0;

    video_format_t v_dst = vd->fmt;
    v_dst.i_aspect  = 0;
    v_dst.i_sar_num = 0;
    v_dst.i_sar_den = 0;

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    video_format_t v_dst_cmp = v_dst;
    if ((v_src.i_chroma == VLC_CODEC_J420 && v_dst.i_chroma == VLC_CODEC_I420) ||
        (v_src.i_chroma == VLC_CODEC_J422 && v_dst.i_chroma == VLC_CODEC_I422) ||
        (v_src.i_chroma == VLC_CODEC_J440 && v_dst.i_chroma == VLC_CODEC_I440) ||
        (v_src.i_chroma == VLC_CODEC_J444 && v_dst.i_chroma == VLC_CODEC_I444))
        v_dst_cmp.i_chroma = v_src.i_chroma;

    const bool convert = memcmp(&v_src, &v_dst_cmp, sizeof(v_src)) != 0;
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    if (!convert)
        return;

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    msg_Err(vd, "A filter to adapt decoder to display is needed");

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    osys->filters = filter_chain_New(vd, "video filter2", false,
                                     FilterAllocationInit,
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                                     FilterAllocationClean, vd);
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    assert(osys->filters); /* TODO critical */

    /* */
    es_format_t src;
    es_format_InitFromVideo(&src, &v_src);

    /* */
    es_format_t dst;

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    filter_t *filter;
    for (int i = 0; i < 1 + (v_dst_cmp.i_chroma != v_dst.i_chroma); i++) {
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        es_format_InitFromVideo(&dst, i == 0 ? &v_dst : &v_dst_cmp);

        filter_chain_Reset(osys->filters, &src, &dst);
        filter = filter_chain_AppendFilter(osys->filters,
                                           NULL, NULL, &src, &dst);
        if (filter)
            break;
    }
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    if (!filter)
    {
        msg_Err(vd, "VoutDisplayCreateRender FAILED");
        /* TODO */
        assert(0);
    }
}

static void VoutDisplayDestroyRender(vout_display_t *vd)
{
    vout_display_owner_sys_t *osys = vd->owner.sys;

    if (osys->filters)
        filter_chain_Delete(osys->filters);
}

static void VoutDisplayResetRender(vout_display_t *vd)
{
    VoutDisplayDestroyRender(vd);
    VoutDisplayCreateRender(vd);
}
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static void VoutDisplayEventMouse(vout_display_t *vd, int event, va_list args)
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{
    vout_display_owner_sys_t *osys = vd->owner.sys;

    /* */
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    vlc_mouse_t m = osys->mouse.state;
    bool is_ignored = false;
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    switch (event) {
    case VOUT_DISPLAY_EVENT_MOUSE_STATE: {
        const int x = (int)va_arg(args, int);
        const int y = (int)va_arg(args, int);
        const int button_mask = (int)va_arg(args, int);

        vlc_mouse_Init(&m);
        m.i_x = x;
        m.i_y = y;
        m.i_pressed = button_mask;
        break;
    }
    case VOUT_DISPLAY_EVENT_MOUSE_MOVED: {
        const int x = (int)va_arg(args, int);
        const int y = (int)va_arg(args, int);
        if (x != osys->mouse.state.i_x || y != osys->mouse.state.i_y) {
            msg_Dbg(vd, "VoutDisplayEvent 'mouse' @%d,%d", x, y);

            m.i_x = x;
            m.i_y = y;
            m.b_double_click = false;
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        } else {
            is_ignored = true;
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        }
        break;
    }
    case VOUT_DISPLAY_EVENT_MOUSE_PRESSED:
    case VOUT_DISPLAY_EVENT_MOUSE_RELEASED: {
        const int button = (int)va_arg(args, int);
        const int button_mask = 1 << button;

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        /* Ignore inconsistent event */
        if ((event == VOUT_DISPLAY_EVENT_MOUSE_PRESSED  &&  (osys->mouse.state.i_pressed & button_mask)) ||
            (event == VOUT_DISPLAY_EVENT_MOUSE_RELEASED && !(osys->mouse.state.i_pressed & button_mask))) {
            is_ignored = true;
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            break;
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        }
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        /* */
        msg_Dbg(vd, "VoutDisplayEvent 'mouse button' %d t=%d", button, event);

        m.b_double_click = false;
        if (event == VOUT_DISPLAY_EVENT_MOUSE_PRESSED)
            m.i_pressed |= button_mask;
        else
            m.i_pressed &= ~button_mask;
        break;
    }
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    case VOUT_DISPLAY_EVENT_MOUSE_DOUBLE_CLICK:
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        msg_Dbg(vd, "VoutDisplayEvent 'double click'");

        m.b_double_click = true;
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        break;
    default:
        assert(0);
    }

    if (is_ignored)
        return;

    /* Emulate double-click if needed */
    if (!vd->info.has_double_click &&
        vlc_mouse_HasPressed(&osys->mouse.state, &m, MOUSE_BUTTON_LEFT)) {
        const mtime_t i_date = mdate();

        if (i_date - osys->mouse.last_pressed < osys->mouse.double_click_timeout ) {
            m.b_double_click = true;
            osys->mouse.last_pressed = 0;
        } else {
            osys->mouse.last_pressed = mdate();
        }
    }

    /* */
    osys->mouse.state = m;

    /* */
    osys->mouse.is_hidden = false;
    if (!vd->info.has_hide_mouse)
        osys->mouse.last_moved = mdate();

    /* */
    vout_SendEventMouseVisible(osys->vout);
    vout_SendDisplayEventMouse(osys->vout, &m);
}

static void VoutDisplayEvent(vout_display_t *vd, int event, va_list args)
{
    vout_display_owner_sys_t *osys = vd->owner.sys;

    switch (event) {
    case VOUT_DISPLAY_EVENT_CLOSE: {
        msg_Dbg(vd, "VoutDisplayEvent 'close'");
        vout_SendEventClose(osys->vout);
        break;
    }
    case VOUT_DISPLAY_EVENT_KEY: {
        const int key = (int)va_arg(args, int);
        msg_Dbg(vd, "VoutDisplayEvent 'key' 0x%2.2x", key);
        vout_SendEventKey(osys->vout, key);
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        break;
    }
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    case VOUT_DISPLAY_EVENT_MOUSE_STATE:
    case VOUT_DISPLAY_EVENT_MOUSE_MOVED:
    case VOUT_DISPLAY_EVENT_MOUSE_PRESSED:
    case VOUT_DISPLAY_EVENT_MOUSE_RELEASED:
    case VOUT_DISPLAY_EVENT_MOUSE_DOUBLE_CLICK:
        VoutDisplayEventMouse(vd, event, args);
        break;
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    case VOUT_DISPLAY_EVENT_FULLSCREEN: {
        const int is_fullscreen = (int)va_arg(args, int);

        msg_Dbg(vd, "VoutDisplayEvent 'fullscreen' %d", is_fullscreen);

        if (!is_fullscreen == !osys->is_fullscreen)
            break;
        osys->ch_fullscreen = true;
        osys->is_fullscreen = is_fullscreen;
        break;
    }

    case VOUT_DISPLAY_EVENT_DISPLAY_SIZE: {
        const int width  = (int)va_arg(args, int);
        const int height = (int)va_arg(args, int);
        msg_Dbg(vd, "VoutDisplayEvent 'resize' %dx%d", width, height);

        /* */
        osys->ch_display_size = true;
        osys->display_width   = width;
        osys->display_height  = height;
        break;
    }

    case VOUT_DISPLAY_EVENT_PICTURES_INVALID: {
        msg_Warn(vd, "VoutDisplayEvent 'pictures invalid'");

        /* */
        assert(vd->info.has_pictures_invalid);
        osys->reset_pictures = true;
        break;
    }
    default:
        msg_Err(vd, "VoutDisplayEvent received event %d", event);
        /* TODO add an assert when all event are handled */
        break;
    }
}

static vout_window_t *VoutDisplayNewWindow(vout_display_t *vd, const vout_window_cfg_t *cfg)
{
    vout_display_owner_sys_t *osys = vd->owner.sys;

    return vout_NewDisplayWindow(osys->vout, vd, cfg);
}
static void VoutDisplayDelWindow(vout_display_t *vd, vout_window_t *window)
{
    vout_display_owner_sys_t *osys = vd->owner.sys;

    vout_DeleteDisplayWindow(osys->vout, vd, window);
}

void vout_ManageDisplay(vout_display_t *vd)
{
    vout_display_owner_sys_t *osys = vd->owner.sys;

    vout_display_Manage(vd);

    /* Handle mouse timeout */
    const mtime_t date = mdate();
    if (!osys->mouse.is_hidden &&
        osys->mouse.last_moved + osys->mouse.hide_timeout < date) {
        if (!vd->info.has_hide_mouse) {
            msg_Dbg(vd, "auto hidding mouse");
            vout_display_Control(vd, VOUT_DISPLAY_HIDE_MOUSE);
        }
        osys->mouse.is_hidden = true;

        vout_SendEventMouseHidden(osys->vout);
    }

    bool reset_pictures = false;
    for (;;) {
        if (!osys->ch_fullscreen &&
            !osys->ch_display_size &&
            !osys->reset_pictures &&
            !osys->ch_display_filled &&
            !osys->ch_zoom &&
            !osys->ch_on_top &&
            !osys->ch_sar &&
            !osys->ch_crop)
            break;

        /* */
        if (osys->ch_fullscreen) {
            vout_display_cfg_t cfg = osys->cfg;

            cfg.is_fullscreen = osys->is_fullscreen;
            cfg.display.width  = cfg.is_fullscreen ? 0 : osys->width_saved;
            cfg.display.height = cfg.is_fullscreen ? 0 : osys->height_saved;

            if (vout_display_Control(vd, VOUT_DISPLAY_CHANGE_FULLSCREEN, &cfg)) {
                msg_Err(vd, "Failed to set fullscreen");
                osys->is_fullscreen = osys->cfg.is_fullscreen;
            }
            osys->cfg.is_fullscreen = osys->is_fullscreen;
            osys->ch_fullscreen = false;

            /* */
            vout_SendEventFullscreen(osys->vout, osys->cfg.is_fullscreen);
        }

        /* */
        if (osys->ch_display_size) {
            vout_display_cfg_t cfg = osys->cfg;
            cfg.display.width  = osys->display_width;
            cfg.display.height = osys->display_height;

            if (vout_display_Control(vd, VOUT_DISPLAY_CHANGE_DISPLAY_SIZE, &cfg)) {
                msg_Err(vd, "Failed to resize display");

                /* We ignore the resized */
                osys->display_width  = osys->cfg.display.width;
                osys->display_height = osys->cfg.display.height;
            }
            osys->cfg.display.width  = osys->display_width;
            osys->cfg.display.height = osys->display_height;

            if (!osys->is_fullscreen) {
                osys->width_saved  = osys->display_width;
                osys->height_saved = osys->display_height;
            }
            osys->ch_display_size = false;
        }
        /* */
        if (osys->ch_display_filled) {
            vout_display_cfg_t cfg = osys->cfg;

            cfg.is_display_filled = osys->is_display_filled;

            if (vout_display_Control(vd, VOUT_DISPLAY_CHANGE_DISPLAY_FILLED, &cfg)) {
                msg_Err(vd, "Failed to change display filled state");
                osys->is_display_filled = osys->cfg.is_display_filled;
            }
            osys->cfg.is_display_filled = osys->is_display_filled;
            osys->ch_display_filled = false;

            vout_SendEventDisplayFilled(osys->vout, osys->cfg.is_display_filled);
        }
        /* */
        if (osys->ch_zoom) {
            vout_display_cfg_t cfg = osys->cfg;

            cfg.zoom.num = osys->zoom.num;
            cfg.zoom.den = osys->zoom.den;

            if (10 * cfg.zoom.num <= cfg.zoom.den) {
                cfg.zoom.num = 1;
                cfg.zoom.den = 10;
            } else if (cfg.zoom.num >= 10 * cfg.zoom.den) {
                cfg.zoom.num = 10;
                cfg.zoom.den = 1;
            }

            if (vout_display_Control(vd, VOUT_DISPLAY_CHANGE_ZOOM, &cfg)) {
                msg_Err(vd, "Failed to change zoom");
                osys->zoom.num = osys->cfg.zoom.num;
                osys->zoom.den = osys->cfg.zoom.den;
            } else if (cfg.is_display_filled) {
                osys->ch_display_size = true;
                osys->display_width  = (int64_t)vd->source.i_width  * osys->zoom.num / osys->zoom.den;
                osys->display_height = (int64_t)vd->source.i_height * osys->zoom.num / osys->zoom.den;
            }

            osys->cfg.zoom.num = osys->zoom.num;
            osys->cfg.zoom.den = osys->zoom.den;
            osys->ch_zoom = false;

            vout_SendEventZoom(osys->vout, osys->cfg.zoom.num, osys->cfg.zoom.den);
        }
        /* */
        if (osys->ch_on_top) {
            bool is_on_top = osys->is_on_top;

            if (vout_display_Control(vd, VOUT_DISPLAY_CHANGE_ON_TOP, is_on_top)) {
                msg_Err(vd, "Failed to set on top");
                is_on_top = osys->is_on_top_initial;
            }
            osys->is_on_top_initial =
            osys->is_on_top         = is_on_top;
            osys->ch_on_top = false;

            /* */
            vout_SendEventOnTop(osys->vout, osys->is_on_top_initial);
        }
        /* */
        if (osys->ch_sar) {
            video_format_t source = vd->source;

            if (osys->sar.num > 0 && osys->sar.den > 0) {
                source.i_sar_num = osys->sar.num;
                source.i_sar_den = osys->sar.den;
            } else {
                source.i_sar_num = osys->source.i_sar_num;
                source.i_sar_den = osys->source.i_sar_den;
            }

            if (vout_display_Control(vd, VOUT_DISPLAY_CHANGE_SOURCE_ASPECT, &source)) {
                /* There nothing much we can do. The only reason a vout display
                 * does not support it is because it need the core to add black border
                 * to the video for it.
                 * TODO add black borders ?
                 */
                msg_Err(vd, "Failed to change source AR");
                source = vd->source;
            }
            vd->source = source;
            osys->sar.num = source.i_sar_num;
            osys->sar.den = source.i_sar_den;
            osys->ch_sar  = false;

            /* */
            if (osys->sar.num == osys->source.i_sar_num &&
                osys->sar.den == osys->source.i_sar_den)
            {
                vout_SendEventSourceAspect(osys->vout, 0, 0);
            }
            else
            {
                unsigned dar_num, dar_den;
                vlc_ureduce( &dar_num, &dar_den,
                             osys->sar.num * vd->source.i_visible_width,
                             osys->sar.den * vd->source.i_visible_height,
                             65536);
                vout_SendEventSourceAspect(osys->vout, dar_num, dar_den);
            }
        }
        /* */
        if (osys->ch_crop) {
            video_format_t source = vd->source;
            unsigned crop_num = osys->crop.num;
            unsigned crop_den = osys->crop.den;

            source.i_x_offset       = osys->crop.x;
            source.i_y_offset       = osys->crop.y;
            source.i_visible_width  = osys->crop.width;
            source.i_visible_height = osys->crop.height;

            /* */
            const bool is_valid = source.i_x_offset < source.i_width &&
                                  source.i_y_offset < source.i_height &&
                                  source.i_x_offset + source.i_visible_width  <= source.i_width &&
                                  source.i_y_offset + source.i_visible_height <= source.i_height &&
                                  source.i_visible_width > 0 && source.i_visible_height > 0;

            if (!is_valid || vout_display_Control(vd, VOUT_DISPLAY_CHANGE_SOURCE_CROP, &source)) {
                if (is_valid)
                    msg_Err(vd, "Failed to change source crop TODO implement crop at core");
                else
                    msg_Err(vd, "Invalid crop requested");

                source = vd->source;
                crop_num = osys->crop_saved.num;
                crop_den = osys->crop_saved.den;
                /* FIXME implement cropping in the core if not supported by the
                 * vout module (easy)
                 */
            }
            vd->source = source;
            osys->crop.x      = source.i_x_offset;
            osys->crop.y      = source.i_y_offset;
            osys->crop.width  = source.i_visible_width;
            osys->crop.height = source.i_visible_height;
            osys->crop.num    = crop_num;
            osys->crop.den    = crop_den;
            osys->ch_crop = false;

            /* TODO fix when a ratio is used (complicated). */
            const unsigned left   = osys->crop.x - osys->source.i_x_offset;
            const unsigned top    = osys->crop.y - osys->source.i_y_offset;
            const unsigned right  = osys->source.i_visible_width  - (osys->crop.width  + osys->crop.x);
            const unsigned bottom = osys->source.i_visible_height - (osys->crop.height + osys->crop.y);
            vout_SendEventSourceCrop(osys->vout,
                                     osys->crop.num, osys->crop.den,
                                     left, top, right, bottom);
        }

        /* */
        if (osys->reset_pictures) {
            if (vout_display_Control(vd, VOUT_DISPLAY_RESET_PICTURES)) {
                /* FIXME what to do here ? */
                msg_Err(vd, "Failed to reset pictures (probably fatal)");
            }
            reset_pictures = true;

            osys->reset_pictures = false;
        }
    }
    if (reset_pictures)
        VoutDisplayResetRender(vd);
}

bool vout_AreDisplayPicturesInvalid(vout_display_t *vd)
{
    vout_display_owner_sys_t *osys = vd->owner.sys;

    return osys->reset_pictures;
}

bool vout_IsDisplayFiltered(vout_display_t *vd)
{
    vout_display_owner_sys_t *osys = vd->owner.sys;

    return osys->filters != NULL;
}

picture_t *vout_FilterDisplay(vout_display_t *vd, picture_t *picture)
{
    vout_display_owner_sys_t *osys = vd->owner.sys;

852
    assert(osys->filters);
853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053
    return filter_chain_VideoFilter(osys->filters, picture);
}

void vout_SetDisplayFullscreen(vout_display_t *vd, bool is_fullscreen)
{
    vout_display_owner_sys_t *osys = vd->owner.sys;

    if (!osys->is_fullscreen != !is_fullscreen) {
        osys->ch_fullscreen = true;
        osys->is_fullscreen = is_fullscreen;
    }
}

void vout_SetDisplayFilled(vout_display_t *vd, bool is_filled)
{
    vout_display_owner_sys_t *osys = vd->owner.sys;

    if (!osys->is_display_filled != !is_filled) {
        osys->ch_display_filled = true;
        osys->is_display_filled = is_filled;
    }
}

void vout_SetDisplayZoom(vout_display_t *vd, int num, int den)
{
    vout_display_owner_sys_t *osys = vd->owner.sys;

    if (osys->zoom.num != num || osys->zoom.den != den) {
        osys->ch_zoom = true;
        osys->zoom.num = num;
        osys->zoom.den = den;
    }
}
void vout_SetDisplayOnTop(vout_display_t *vd, bool is_on_top)
{
    vout_display_owner_sys_t *osys = vd->owner.sys;

    if (!osys->is_on_top != !is_on_top) {
        osys->ch_on_top = true;
        osys->is_on_top = is_on_top;
    }
}
void vout_SetDisplayAspect(vout_display_t *vd, unsigned sar_num, unsigned sar_den)
{
    vout_display_owner_sys_t *osys = vd->owner.sys;

    if (osys->sar.num != sar_num || osys->sar.den != sar_den) {
        osys->ch_sar = true;
        osys->sar.num = sar_num;
        osys->sar.den = sar_den;
    }
}
void vout_SetDisplayCrop(vout_display_t *vd,
                         unsigned crop_num, unsigned crop_den,
                         unsigned x, unsigned y, unsigned width, unsigned height)
{
    vout_display_owner_sys_t *osys = vd->owner.sys;

    if (osys->crop.x != x || osys->crop.y != y ||
        osys->crop.width  != width || osys->crop.height != height) {

        osys->crop.x      = x;
        osys->crop.y      = y;
        osys->crop.width  = width;
        osys->crop.height = height;
        osys->crop.num    = crop_num;
        osys->crop.den    = crop_den;

        osys->ch_crop = true;
    }
}


static vout_display_t *DisplayNew(vout_thread_t *vout,
                                  const video_format_t *source_org,
                                  const vout_display_state_t *state,
                                  const char *module,
                                  bool is_wrapper, vout_display_t *wrapper,
                                  mtime_t double_click_timeout,
                                  mtime_t hide_timeout,
                                  const vout_display_owner_t *owner_ptr)
{
    /* */
    vout_display_owner_sys_t *osys = calloc(1, sizeof(*osys));
    vout_display_cfg_t *cfg = &osys->cfg;

    *cfg = state->cfg;
    osys->is_on_top_initial = state->is_on_top;;
    osys->sar_initial.num = state->sar.num;
    osys->sar_initial.den = state->sar.den;
    vout_display_GetDefaultDisplaySize(&cfg->display.width, &cfg->display.height,
                                       source_org, cfg);

    osys->vout = vout;
    osys->is_wrapper = is_wrapper;
    osys->wrapper = wrapper;

    vlc_mouse_Init(&osys->mouse.state);
    osys->mouse.last_moved = mdate();
    osys->mouse.double_click_timeout = double_click_timeout;
    osys->mouse.hide_timeout = hide_timeout;
    osys->is_fullscreen  = cfg->is_fullscreen;
    osys->width_saved    =
    osys->display_width  = cfg->display.width;
    osys->height_saved   =
    osys->display_height = cfg->display.height;
    osys->is_display_filled = cfg->is_display_filled;
    osys->zoom.num = cfg->zoom.num;
    osys->zoom.den = cfg->zoom.den;

    osys->source = *source_org;

    video_format_t source = *source_org;

    source.i_x_offset =
    osys->crop.x  = 0;
    source.i_y_offset =
    osys->crop.y  = 0;
    source.i_visible_width  =
    osys->crop.width    = source.i_width;
    source.i_visible_height =
    osys->crop.height   = source.i_height;
    osys->crop_saved.num = 0;
    osys->crop_saved.den = 0;
    osys->crop.num = 0;
    osys->crop.den = 0;

    osys->sar.num = osys->sar_initial.num ? osys->sar_initial.num : source.i_sar_num;
    osys->sar.den = osys->sar_initial.den ? osys->sar_initial.den : source.i_sar_den;

    vout_display_owner_t owner;
    if (owner_ptr) {
        owner = *owner_ptr;
    } else {
        owner.event      = VoutDisplayEvent;
        owner.window_new = VoutDisplayNewWindow;
        owner.window_del = VoutDisplayDelWindow;
    }
    owner.sys = osys;

    /* */
    vout_display_t *p_display = vout_display_New(VLC_OBJECT(vout),
                                                 module, !is_wrapper,
                                                 &source, cfg, &owner);
    if (!p_display) {
        free(osys);
        return NULL;
    }

    VoutDisplayCreateRender(p_display);

    /* Setup delayed request */
    if (osys->sar.num != source_org->i_sar_num ||
        osys->sar.den != source_org->i_sar_den)
        osys->ch_sar = true;
    if (osys->is_on_top)
        osys->ch_on_top = true;
    if (osys->crop.x      != source_org->i_x_offset ||
        osys->crop.y      != source_org->i_y_offset ||
        osys->crop.width  != source_org->i_visible_width ||
        osys->crop.height != source_org->i_visible_height)
        osys->ch_crop = true;

    return p_display;
}

void vout_DeleteDisplay(vout_display_t *vd, vout_display_state_t *state)
{
    vout_display_owner_sys_t *osys = vd->owner.sys;

    if (state) {
        if (!osys->is_wrapper )
            state->cfg = osys->cfg;
        state->is_on_top = osys->is_on_top_initial;
        state->sar.num   = osys->sar_initial.num;
        state->sar.den   = osys->sar_initial.den;
    }

    VoutDisplayDestroyRender(vd);
    if (osys->is_wrapper)
        SplitterClose(vd);
    vout_display_Delete(vd);
    free(osys);
}

/*****************************************************************************
 *
 *****************************************************************************/
vout_display_t *vout_NewDisplay(vout_thread_t *vout,
                                const video_format_t *source,
                                const vout_display_state_t *state,
                                const char *module,
                                mtime_t double_click_timeout,
                                mtime_t hide_timeout)
{
    return DisplayNew(vout, source, state, module, false, NULL,
                      double_click_timeout, hide_timeout, NULL);
}

static void SplitterClose(vout_display_t *vd)
{
1054
    VLC_UNUSED(vd);
1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138
    assert(0);
}

#if 0
/*****************************************************************************
 *
 *****************************************************************************/
struct vout_display_sys_t {
    video_splitter_t *splitter;

    /* */
    int            count;
    picture_t      **picture;
    vout_display_t **display;
};
struct video_splitter_owner_t {
    vout_display_t *wrapper;
};

static vout_window_t *SplitterNewWindow(vout_display_t *vd, const vout_window_cfg_t *cfg_ptr)
{
    vout_display_owner_sys_t *osys = vd->owner.sys;

    vout_window_cfg_t cfg = *cfg_ptr;
    cfg.is_standalone = true;
    cfg.x += 0;//output->window.i_x; FIXME
    cfg.y += 0;//output->window.i_y;

    return vout_NewDisplayWindow(osys->vout, vd, &cfg);
}
static void SplitterDelWindow(vout_display_t *vd, vout_window_t *window)
{
    vout_display_owner_sys_t *osys = vd->owner.sys;

    vout_DeleteDisplayWindow(osys->vout, vd, window);
}
static void SplitterEvent(vout_display_t *vd, int event, va_list args)
{
    vout_display_owner_sys_t *osys = vd->owner.sys;

    switch (event) {
#if 0
    case VOUT_DISPLAY_EVENT_MOUSE_STATE:
    case VOUT_DISPLAY_EVENT_MOUSE_MOVED:
    case VOUT_DISPLAY_EVENT_MOUSE_PRESSED:
    case VOUT_DISPLAY_EVENT_MOUSE_RELEASED:
        /* TODO */
        break;
#endif
    case VOUT_DISPLAY_EVENT_MOUSE_DOUBLE_CLICK:
    case VOUT_DISPLAY_EVENT_KEY:
    case VOUT_DISPLAY_EVENT_CLOSE:
    case VOUT_DISPLAY_EVENT_FULLSCREEN:
    case VOUT_DISPLAY_EVENT_DISPLAY_SIZE:
    case VOUT_DISPLAY_EVENT_PICTURES_INVALID:
        VoutDisplayEvent(vd, event, args);
        break;

    default:
        msg_Err(vd, "SplitterEvent TODO");
        break;
    }
}

static picture_t *SplitterGet(vout_display_t *vd)
{
    /* TODO pool ? */
    return picture_NewFromFormat(&vd->fmt);
}
static void SplitterPrepare(vout_display_t *vd, picture_t *picture)
{
    vout_display_sys_t *sys = vd->sys;

    picture_Hold(picture);

    if (video_splitter_Filter(sys->splitter, sys->picture, picture)) {
        for (int i = 0; i < sys->count; i++)
            sys->picture[i] = NULL;
        picture_Release(picture);
        return;
    }

    for (int i = 0; i < sys->count; i++) {
        /* */
1139
        /* FIXME now vout_FilterDisplay already return a direct buffer FIXME */
1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335
        sys->picture[i] = vout_FilterDisplay(sys->display[i], sys->picture[i]);
        if (!sys->picture[i])
            continue;

        /* */
        picture_t *direct = vout_display_Get(sys->display[i]);
        if (!direct) {
            msg_Err(vd, "Failed to get a direct buffer");
            picture_Release(sys->picture[i]);
            sys->picture[i] = NULL;
            continue;
        }

        /* FIXME not always needed (easy when there is a osys->filters) */
        picture_Copy(direct, sys->picture[i]);
        picture_Release(sys->picture[i]);
        sys->picture[i] = direct;

        vout_display_Prepare(sys->display[i], sys->picture[i]);
    }
}
static void SplitterDisplay(vout_display_t *vd, picture_t *picture)
{
    vout_display_sys_t *sys = vd->sys;

    for (int i = 0; i < sys->count; i++) {
        if (sys->picture[i])
            vout_display_Display(sys->display[i], sys->picture[i]);
    }
    picture_Release(picture);
}
static int SplitterControl(vout_display_t *vd, int query, va_list args)
{
    return VLC_EGENERIC;
}
static void SplitterManage(vout_display_t *vd)
{
    vout_display_sys_t *sys = vd->sys;

    for (int i = 0; i < sys->count; i++)
        vout_ManageDisplay(sys->display[i]);
}

static int SplitterPictureNew(video_splitter_t *splitter, picture_t *picture[])
{
    vout_display_sys_t *wsys = splitter->p_owner->wrapper->sys;

    for (int i = 0; i < wsys->count; i++) {
        /* TODO pool ? */
        picture[i] = picture_NewFromFormat(&wsys->display[i]->source);
        if (!picture[i]) {
            for (int j = 0; j < i; j++)
                picture_Release(picture[j]);
            return VLC_EGENERIC;
        }
    }
    return VLC_SUCCESS;
}
static void SplitterPictureDel(video_splitter_t *splitter, picture_t *picture[])
{
    vout_display_sys_t *wsys = splitter->p_owner->wrapper->sys;

    for (int i = 0; i < wsys->count; i++)
        picture_Release(picture[i]);
}
static void SplitterClose(vout_display_t *vd)
{
    vout_display_sys_t *sys = vd->sys;

    /* */
    video_splitter_t *splitter = sys->splitter;
    free(splitter->p_owner);
    video_splitter_Delete(splitter);

    /* */
    for (int i = 0; i < sys->count; i++)
        vout_DeleteDisplay(sys->display[i], NULL);
    TAB_CLEAN(sys->count, sys->display);
    free(sys->picture);

    free(sys);
}

vout_display_t *vout_NewSplitter(vout_thread_t *vout,
                                 const video_format_t *source,
                                 const vout_display_state_t *state,
                                 const char *module,
                                 const char *splitter_module,
                                 mtime_t double_click_timeout,
                                 mtime_t hide_timeout)
{
    video_splitter_t *splitter =
        video_splitter_New(VLC_OBJECT(vout), splitter_module, source);
    if (!splitter)
        return NULL;

    /* */
    vout_display_t *wrapper =
        DisplayNew(vout, source, state, module, true, NULL,
                    double_click_timeout, hide_timeout, NULL);
    if (!wrapper) {
        video_splitter_Delete(splitter);
        return NULL;
    }
    vout_display_sys_t *sys = malloc(sizeof(*sys));
    if (!sys)
        abort();
    sys->picture = calloc(splitter->i_output, sizeof(*sys->picture));
    if (!sys->picture )
        abort();
    sys->splitter = splitter;

    wrapper->get     = SplitterGet;
    wrapper->prepare = SplitterPrepare;
    wrapper->display = SplitterDisplay;
    wrapper->control = SplitterControl;
    wrapper->manage  = SplitterManage;
    wrapper->sys     = sys;

    /* */
    video_splitter_owner_t *owner = malloc(sizeof(*owner));
    if (!owner)
        abort();
    owner->wrapper = wrapper;
    splitter->p_owner = owner;
    splitter->pf_picture_new = SplitterPictureNew;
    splitter->pf_picture_del = SplitterPictureDel;

    /* */
    TAB_INIT(sys->count, sys->display);
    for (int i = 0; i < splitter->i_output; i++) {
        vout_display_owner_t owner;

        owner.event      = SplitterEvent;
        owner.window_new = SplitterNewWindow;
        owner.window_del = SplitterDelWindow;

        const video_splitter_output_t *output = &splitter->p_output[i];
        vout_display_state_t ostate;

        memset(&ostate, 0, sizeof(ostate));
        ostate.cfg.is_fullscreen = false;
        ostate.cfg.display = state->cfg.display;
        ostate.cfg.align.horizontal = 0; /* TODO */
        ostate.cfg.align.vertical = 0; /* TODO */
        ostate.cfg.is_display_filled = true;
        ostate.cfg.zoom.num = 1;
        ostate.cfg.zoom.den = 1;

        vout_display_t *vd = DisplayNew(vout, &output->fmt, &ostate,
                                           output->psz_module ? output->psz_module : module,
                                           false, wrapper,
                                           double_click_timeout, hide_timeout, &owner);
        if (!vd) {
            vout_DeleteDisplay(wrapper, NULL);
            return NULL;
        }
        TAB_APPEND(sys->count, sys->display, vd);
    }

    return wrapper;
}
#endif

/*****************************************************************************
 * TODO move out
 *****************************************************************************/
#include "vout_internal.h"
void vout_SendDisplayEventMouse(vout_thread_t *vout, const vlc_mouse_t *m)
{
    if (vlc_mouse_HasMoved(&vout->p->mouse, m)) {
        vout_SendEventMouseMoved(vout, m->i_x, m->i_y);
    }
    if (vlc_mouse_HasButton(&vout->p->mouse, m)) {
        static const int buttons[] = {
            MOUSE_BUTTON_LEFT,
            MOUSE_BUTTON_CENTER,
            MOUSE_BUTTON_RIGHT,
            MOUSE_BUTTON_WHEEL_UP,
            MOUSE_BUTTON_WHEEL_DOWN,
            -1
        };
        for (int i = 0; buttons[i] >= 0; i++) {
            const int button = buttons[i];
            if (vlc_mouse_HasPressed(&vout->p->mouse, m, button))
                vout_SendEventMousePressed(vout, button);
            else if (vlc_mouse_HasReleased(&vout->p->mouse, m, button))
                vout_SendEventMouseReleased(vout, button);
        }
    }
    if (m->b_double_click)
        vout_SendEventMouseDoubleClick(vout);
    vout->p->mouse = *m;
}
vout_window_t * vout_NewDisplayWindow(vout_thread_t *vout, vout_display_t *vd, const vout_window_cfg_t *cfg)
{
1336
    VLC_UNUSED(vd);
1337 1338 1339 1340 1341 1342 1343 1344 1345
    vout_window_cfg_t cfg_override = *cfg;

    if( !config_GetInt( vout, "embedded-video" ) )
        cfg_override.is_standalone = true;

    return vout_window_New(VLC_OBJECT(vout), NULL, &cfg_override);
}
void vout_DeleteDisplayWindow(vout_thread_t *vout, vout_display_t *vd, vout_window_t *window)
{
1346 1347
    VLC_UNUSED(vout);
    VLC_UNUSED(vd);
1348 1349 1350
    vout_window_Delete(window);
}