display.c 49.8 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>
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#include <vlc_block.h>
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#include <libvlc.h>

#include "display.h"

#include "event.h"

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/* It must be present as long as a vout_display_t must be created using a dummy
 * vout (as an opengl provider) */
#define ALLOW_DUMMY_VOUT

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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);

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    picture_pool_t *pool = vout_display_Pool(vd, 3);
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    if (!pool)
        return NULL;
    return picture_pool_Get(pool);
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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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{
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    filter->pf_video_buffer_new = VideoBufferNew;
    filter->pf_video_buffer_del = VideoBufferDelete;
    filter->p_owner             = vd;
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    return VLC_SUCCESS;
}
static void FilterAllocationClean(filter_t *filter)
{
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    filter->pf_video_buffer_new = NULL;
    filter->pf_video_buffer_del = NULL;
    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_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;
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    vd->info.has_event_thread = false;
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    vd->cfg = cfg;
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    vd->pool = NULL;
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    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_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)
{
    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)
{
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    if (vd->manage)
        vd->manage(vd);
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}

/* */
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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 display_width;
    unsigned display_height;
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    if (cfg->is_display_filled) {
        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;
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        vout_display_GetDefaultDisplaySize(&display_width, &display_height,
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                                           source, &cfg_tmp);

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

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    const unsigned width  = source->i_visible_width;
    const unsigned height = source->i_visible_height;
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    /* 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:
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        place->x = ((int)cfg->display.width - (int)place->width) / 2;
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        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:
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        place->y = ((int)cfg->display.height - (int)place->height) / 2;
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        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 */

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

    /* */
    int  width_saved;
    int  height_saved;

    struct {
        unsigned num;
        unsigned den;
    } crop_saved;

    /* */
    bool ch_display_filled;
    bool is_display_filled;

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

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    bool ch_wm_state;
    unsigned wm_state;
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    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;
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    /* Lock protecting the variables used by
     * VoutDisplayEvent(ie vout_display_SendEvent) */
    vlc_mutex_t lock;

    /* mouse state */
    struct {
        vlc_mouse_t state;

        mtime_t last_pressed;
        mtime_t last_moved;
        bool    is_hidden;
        bool    ch_activity;

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

    bool reset_pictures;

    bool ch_fullscreen;
    bool is_fullscreen;

    bool ch_display_size;
    int  display_width;
    int  display_height;
    bool display_is_fullscreen;
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    bool display_is_forced;
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    int  fit_window;

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    struct {
        vlc_thread_t thread;
        block_fifo_t *fifo;
    } event;

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#ifdef ALLOW_DUMMY_VOUT
    vlc_mouse_t vout_mouse;
#endif
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};

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static void DummyVoutSendDisplayEventMouse(vout_thread_t *, vlc_mouse_t *fallback, const vlc_mouse_t *m);

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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_sar_num = 0;
    v_src.i_sar_den = 0;

    video_format_t v_dst = vd->fmt;
    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_Dbg(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_mutex_lock(&osys->lock);

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    /* */
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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) {
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            //msg_Dbg(vd, "VoutDisplayEvent 'mouse' @%d,%d", x, y);
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            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);
    }

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    if (is_ignored) {
        vlc_mutex_unlock(&osys->lock);
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        return;
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    }
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    /* 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;

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

    /* */
    vout_SendEventMouseVisible(osys->vout);
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#ifdef ALLOW_DUMMY_VOUT
    DummyVoutSendDisplayEventMouse(osys->vout, &osys->vout_mouse, &m);
#else
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    vout_SendDisplayEventMouse(osys->vout, &m);
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#endif
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    vlc_mutex_unlock(&osys->lock);
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}

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static void *VoutDisplayEventKeyDispatch(void *data)
{
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    vout_display_owner_sys_t *osys = data;
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    for (;;) {
        block_t *event = block_FifoGet(osys->event.fifo);
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        int cancel = vlc_savecancel();
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        int key;
        memcpy(&key, event->p_buffer, sizeof(key));
        vout_SendEventKey(osys->vout, key);
        block_Release(event);
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        vlc_restorecancel(cancel);
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    }
}

static void VoutDisplayEventKey(vout_display_t *vd, int key)
{
    vout_display_owner_sys_t *osys = vd->owner.sys;

    if (!osys->event.fifo) {
        osys->event.fifo = block_FifoNew();
        if (!osys->event.fifo)
            return;
        if (vlc_clone(&osys->event.thread, VoutDisplayEventKeyDispatch,
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                      osys, VLC_THREAD_PRIORITY_LOW)) {
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            block_FifoRelease(osys->event.fifo);
            osys->event.fifo = NULL;
            return;
        }
    }
    block_t *event = block_Alloc(sizeof(key));
    if (event) {
        memcpy(event->p_buffer, &key, sizeof(key));
        block_FifoPut(osys->event.fifo, event);
    }
}

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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);
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        if (vd->info.has_event_thread)
            vout_SendEventKey(osys->vout, key);
        else
            VoutDisplayEventKey(vd, 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);

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        vlc_mutex_lock(&osys->lock);
        if (!is_fullscreen != !osys->is_fullscreen) {
            osys->ch_fullscreen = true;
            osys->is_fullscreen = is_fullscreen;
        }
        vlc_mutex_unlock(&osys->lock);
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        break;
    }

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    case VOUT_DISPLAY_EVENT_WINDOW_STATE: {
        const unsigned state = va_arg(args, unsigned);
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        msg_Dbg(vd, "VoutDisplayEvent 'window state' %u", state);
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        vlc_mutex_lock(&osys->lock);
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        if (state != osys->wm_state) {
            osys->ch_wm_state = true;
            osys->wm_state = state;
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        }
        vlc_mutex_unlock(&osys->lock);
        break;
    }

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    case VOUT_DISPLAY_EVENT_DISPLAY_SIZE: {
        const int width  = (int)va_arg(args, int);
        const int height = (int)va_arg(args, int);
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        const bool is_fullscreen = (bool)va_arg(args, int);
        msg_Dbg(vd, "VoutDisplayEvent 'resize' %dx%d %s",
                width, height, is_fullscreen ? "fullscreen" : "window");
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        /* */
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        vlc_mutex_lock(&osys->lock);

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        osys->ch_display_size       = true;
        osys->display_width         = width;
        osys->display_height        = height;
        osys->display_is_fullscreen = is_fullscreen;
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        osys->display_is_forced     = false;
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        vlc_mutex_unlock(&osys->lock);
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        break;
    }

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

        /* */
        assert(vd->info.has_pictures_invalid);
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        vlc_mutex_lock(&osys->lock);
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        osys->reset_pictures = true;
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        vlc_mutex_unlock(&osys->lock);
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        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);
}

693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725
static void VoutDisplayFitWindow(vout_display_t *vd, bool default_size)
{
    vout_display_owner_sys_t *osys = vd->owner.sys;
    vout_display_cfg_t cfg = osys->cfg;

    if (!cfg.is_display_filled)
        return;

    cfg.display.width = 0;
    if (default_size) {
        cfg.display.height = 0;
    } else {
        cfg.display.height = osys->height_saved;
        cfg.zoom.num = 1;
        cfg.zoom.den = 1;
    }

    unsigned display_width;
    unsigned display_height;
    vout_display_GetDefaultDisplaySize(&display_width, &display_height,
                                       &vd->source, &cfg);

    vlc_mutex_lock(&osys->lock);

    osys->ch_display_size       = true;
    osys->display_width         = display_width;
    osys->display_height        = display_height;
    osys->display_is_fullscreen = osys->cfg.is_fullscreen;
    osys->display_is_forced     = true;

    vlc_mutex_unlock(&osys->lock);
}

726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748
static void VoutDisplayCropRatio(unsigned *x, unsigned *y,
                                 unsigned *width, unsigned *height,
                                 const video_format_t *source,
                                 unsigned num, unsigned den)
{
    unsigned scaled_width  = (uint64_t)source->i_visible_height * num * source->i_sar_den / den / source->i_sar_num;
    unsigned scaled_height = (uint64_t)source->i_visible_width  * den * source->i_sar_num / num / source->i_sar_den;

    if (scaled_width < source->i_visible_width) {
        *x      = (source->i_visible_width - scaled_width) / 2;
        *y      = 0;
        *width  = scaled_width;
        *height = source->i_visible_height;
    } else {
        *x      = 0;
        *y      = (source->i_visible_height - scaled_height) / 2;
        *width  = source->i_visible_width;
        *height = scaled_height;
    }
    *x += source->i_x_offset;
    *y += source->i_y_offset;
}

749
void vout_ManageDisplay(vout_display_t *vd, bool allow_reset_pictures)
750 751 752 753 754 755 756
{
    vout_display_owner_sys_t *osys = vd->owner.sys;

    vout_display_Manage(vd);

    /* Handle mouse timeout */
    const mtime_t date = mdate();
757 758 759 760
    bool  hide_mouse = false;

    vlc_mutex_lock(&osys->lock);

761 762
    if (!osys->mouse.is_hidden &&
        osys->mouse.last_moved + osys->mouse.hide_timeout < date) {
763 764 765 766 767 768 769 770
        osys->mouse.is_hidden = hide_mouse = true;
    } else if (osys->mouse.ch_activity) {
        osys->mouse.is_hidden = false;
    }
    osys->mouse.ch_activity = false;
    vlc_mutex_unlock(&osys->lock);

    if (hide_mouse) {
771 772 773 774 775 776 777
        if (!vd->info.has_hide_mouse) {
            msg_Dbg(vd, "auto hidding mouse");
            vout_display_Control(vd, VOUT_DISPLAY_HIDE_MOUSE);
        }
        vout_SendEventMouseHidden(osys->vout);
    }

778
    bool reset_render = false;
779
    for (;;) {
780 781 782 783 784 785 786

        vlc_mutex_lock(&osys->lock);

        bool ch_fullscreen  = osys->ch_fullscreen;
        bool is_fullscreen  = osys->is_fullscreen;
        osys->ch_fullscreen = false;

787 788 789
        bool ch_wm_state  = osys->ch_wm_state;
        unsigned wm_state  = osys->wm_state;
        osys->ch_wm_state = false;
790

791 792 793 794
        bool ch_display_size       = osys->ch_display_size;
        int  display_width         = osys->display_width;
        int  display_height        = osys->display_height;
        bool display_is_fullscreen = osys->display_is_fullscreen;
795
        bool display_is_forced     = osys->display_is_forced;
796 797
        osys->ch_display_size = false;

798 799 800 801 802 803 804
        bool reset_pictures;
        if (allow_reset_pictures) {
            reset_pictures = osys->reset_pictures;
            osys->reset_pictures = false;
        } else {
            reset_pictures = false;
        }
805 806 807 808 809 810

        vlc_mutex_unlock(&osys->lock);

        if (!ch_fullscreen &&
            !ch_display_size &&
            !reset_pictures &&
811 812
            !osys->ch_display_filled &&
            !osys->ch_zoom &&
813
            !ch_wm_state &&
814
            !osys->ch_sar &&
815 816 817 818 819 820 821
            !osys->ch_crop) {

            if (!osys->cfg.is_fullscreen && osys->fit_window != 0) {
                VoutDisplayFitWindow(vd, osys->fit_window == -1);
                osys->fit_window = 0;
                continue;
            }
822
            break;
823
        }
824 825

        /* */
826
        if (ch_fullscreen) {
827 828
            vout_display_cfg_t cfg = osys->cfg;

829
            cfg.is_fullscreen  = is_fullscreen;
830 831 832 833 834
            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");
835
                is_fullscreen = osys->cfg.is_fullscreen;
836 837
            } else if (!is_fullscreen) {
                vout_display_Control(vd, VOUT_DISPLAY_CHANGE_DISPLAY_SIZE, &cfg, true);
838
            }
839
            osys->cfg.is_fullscreen = is_fullscreen;
840 841 842 843 844 845

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

        /* */
846
        if (ch_display_size) {
847
            vout_display_cfg_t cfg = osys->cfg;
848 849
            cfg.display.width  = display_width;
            cfg.display.height = display_height;
850

851
            if (!cfg.is_fullscreen != !display_is_fullscreen ||
852
                vout_display_Control(vd, VOUT_DISPLAY_CHANGE_DISPLAY_SIZE, &cfg, display_is_forced)) {
853
                if (!cfg.is_fullscreen == !display_is_fullscreen)
854
                    msg_Err(vd, "Failed to resize display");
855 856

                /* We ignore the resized */
857 858
                display_width  = osys->cfg.display.width;
                display_height = osys->cfg.display.height;
859
            }
860 861
            osys->cfg.display.width  = display_width;
            osys->cfg.display.height = display_height;
862

863 864 865
            if (!display_is_fullscreen) {
                osys->width_saved  = display_width;
                osys->height_saved = display_height;
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            }
        }
        /* */
        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;
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            } else {
                osys->fit_window = -1;
904 905 906 907 908 909 910 911 912
            }

            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);
        }
        /* */
913 914
        if (ch_wm_state) {
            if (vout_display_Control(vd, VOUT_DISPLAY_CHANGE_WINDOW_STATE, wm_state)) {
915
                msg_Err(vd, "Failed to set on top");
916
                wm_state = osys->wm_state;
917
            }
918
            osys->wm_state_initial = wm_state;
919 920

            /* */
921
            vout_SendEventOnTop(osys->vout, osys->wm_state_initial);
922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942
        }
        /* */
        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;
943 944
            } else if (!osys->fit_window) {
                osys->fit_window = 1;
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            }
            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);
            }
966 967 968
            /* If a crop ratio is requested, recompute the parameters */
            if (osys->crop.num > 0 && osys->crop.den > 0)
                osys->ch_crop = true;
969 970 971 972
        }
        /* */
        if (osys->ch_crop) {
            video_format_t source = vd->source;
973

974 975
            unsigned crop_num = osys->crop.num;
            unsigned crop_den = osys->crop.den;
976 977 978 979 980 981 982 983
            if (crop_num > 0 && crop_den > 0) {
                video_format_t fmt = osys->source;
                fmt.i_sar_num = source.i_sar_num;
                fmt.i_sar_den = source.i_sar_den;
                VoutDisplayCropRatio(&osys->crop.x, &osys->crop.y,
                                     &osys->crop.width, &osys->crop.height,
                                     &fmt, crop_num, crop_den);
            }
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

            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)
                 */
1009 1010
            } else if (!osys->fit_window) {
                osys->fit_window = 1;
1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031
            }
            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);
        }

        /* */
1032
        if (reset_pictures) {
1033 1034 1035 1036
            if (vout_display_Control(vd, VOUT_DISPLAY_RESET_PICTURES)) {
                /* FIXME what to do here ? */
                msg_Err(vd, "Failed to reset pictures (probably fatal)");
            }
1037
            reset_render = true;
1038 1039
        }
    }
1040
    if (reset_render)
1041 1042 1043 1044 1045 1046 1047
        VoutDisplayResetRender(vd);
}

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

1048 1049 1050 1051 1052
    vlc_mutex_lock(&osys->lock);
    const bool reset_pictures = osys->reset_pictures;
    vlc_mutex_unlock(&osys->lock);

    return reset_pictures;
1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065
}

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;

1066
    assert(osys->filters);
1067 1068 1069 1070 1071 1072 1073
    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;

1074
    vlc_mutex_lock(&osys->lock);
1075 1076 1077 1078
    if (!osys->is_fullscreen != !is_fullscreen) {
        osys->ch_fullscreen = true;
        osys->is_fullscreen = is_fullscreen;
    }
1079
    vlc_mutex_unlock(&osys->lock);
1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095
}

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;

1096 1097
    if (osys->is_display_filled ||
        osys->zoom.num != num || osys->zoom.den != den) {
1098 1099 1100 1101 1102
        osys->ch_zoom = true;
        osys->zoom.num = num;
        osys->zoom.den = den;
    }
}
1103 1104

void vout_SetWindowState(vout_display_t *vd, unsigned state)
1105 1106 1107
{
    vout_display_owner_sys_t *osys = vd->owner.sys;

1108
    vlc_mutex_lock(&osys->lock);
1109 1110 1111
    if (osys->wm_state != state) {
        osys->ch_wm_state = true;
        osys->wm_state = state;
1112
    }
1113
    vlc_mutex_unlock(&osys->lock);
1114
}
1115

1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132
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 ||
1133 1134 1135
        osys->crop.width  != width || osys->crop.height != height ||
        (crop_num > 0 && crop_den > 0 &&
         (crop_num != osys->crop.num || crop_den != osys->crop.den))) {
1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146

        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;
    }
}
1147 1148 1149 1150 1151 1152 1153
vout_opengl_t *vout_GetDisplayOpengl(vout_display_t *vd)
{
    vout_opengl_t *gl;
    if (vout_display_Control(vd, VOUT_DISPLAY_GET_OPENGL, &gl))
        return NULL;
    return gl;
}
1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168

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;
1169
    osys->wm_state_initial = -1;
1170 1171 1172 1173 1174 1175 1176 1177 1178
    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;

1179 1180
    vlc_mutex_init(&osys->lock);

1181 1182 1183 1184 1185 1186 1187 1188
    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->display_width  = cfg->display.width;
    osys->display_height = cfg->display.height;
    osys->is_display_filled = cfg->is_display_filled;
1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199
    osys->width_saved    = cfg->display.width;
    osys->height_saved   = cfg->display.height;
    if (osys->is_fullscreen) {
        vout_display_cfg_t cfg_windowed = *cfg;
        cfg_windowed.is_fullscreen  = false;
        cfg_windowed.display.width  = 0;
        cfg_windowed.display.height = 0;
        vout_display_GetDefaultDisplaySize(&osys->width_saved,
                                           &osys->height_saved,
                                           source_org, &cfg_windowed);
    }
1200 1201
    osys->zoom.num = cfg->zoom.num;
    osys->zoom.den = cfg->zoom.den;
1202
    osys->wm_state = state->wm_state;
1203
    osys->fit_window = 0;
1204
    osys->event.fifo = NULL;
1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224

    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;
1225 1226 1227
#ifdef ALLOW_DUMMY_VOUT
    vlc_mouse_Init(&osys->vout_mouse);
#endif
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

    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;
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    if (osys->wm_state != osys->wm_state_initial)
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        osys->ch_wm_state = true;
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    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;
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        state->wm_state = osys->wm_state;
        state->sar.num  = osys->sar_initial.num;
        state->sar.den  = osys->sar_initial.den;
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    }

    VoutDisplayDestroyRender(vd);
    if (osys->is_wrapper)
        SplitterClose(vd);
    vout_display_Delete(vd);
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    if (osys->event.fifo) {
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        vlc_cancel(osys->event.thread);
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        vlc_join(osys->event.thread, NULL);
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        block_FifoRelease(osys->event.fifo);
    }
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    vlc_mutex_destroy(&osys->lock);
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    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);
}

/*****************************************************************************
 *
 *****************************************************************************/
struct vout_display_sys_t {
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    picture_pool_t   *pool;
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    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)
{
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    //vout_display_owner_sys_t *osys = vd->owner.sys;
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    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;
    }
}

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static picture_pool_t *SplitterPool(vout_display_t *vd, unsigned count)
1366
{
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    vout_display_sys_t *sys = vd->sys;
    if (!sys->pool)
        sys->pool = picture_pool_NewFromFormat(&vd->fmt, count);
    return sys->pool;
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}
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++) {
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        if (vout_IsDisplayFiltered(sys->display[i]))
            sys->picture[i] = vout_FilterDisplay(sys->display[i], sys->picture[i]);
        if (sys->picture[i])
            vout_display_Prepare(sys->display[i], sys->picture[i]);
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    }
}
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++)
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        vout_ManageDisplay(sys->display[i], true);
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