display.c 52.2 KB
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/*****************************************************************************
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 * display.c: "vout display" management
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 *****************************************************************************
 * Copyright (C) 2009 Laurent Aimar
 * $Id$
 *
 * Authors: Laurent Aimar <fenrir _AT_ videolan _DOT_ org>
 *
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 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or
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 * (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
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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 *****************************************************************************/

/*****************************************************************************
 * 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 <vlc_modules.h>
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#include <vlc_filter.h>
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#include <vlc_picture_pool.h>
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#include <libvlc.h>

#include "display.h"
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#include "window.h"
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#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 = filter->owner.sys;
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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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}
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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)
{
    /* */
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    vout_display_t *vd = vlc_custom_create(obj, sizeof(*vd), "vout display" );
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    /* */
    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.needs_event_thread = false;
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    vd->info.subpicture_chromas = NULL;
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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;

    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);

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    video_format_Clean(&vd->source);
    video_format_Clean(&vd->fmt);

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    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;
}
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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;
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    if (ORIENT_IS_SWAP(source->orientation)) {

        unsigned store = *width;
        *width = *height;
        *height = store;
    }
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}

/* */
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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    video_format_t source_rot;
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    video_format_ApplyRotation(&source_rot, source);
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    source = &source_rot;

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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;

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    if (source->projection_mode == PROJECTION_MODE_RECTANGULAR) {
        /* 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;
        }
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    } else {
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        /* No need to preserve an aspect ratio for 360 video.
         * They can fill the display. */
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        place->width  = display_width;
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        place->height = display_height;
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    }

    /*  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;
    }
}

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void vout_display_SendMouseMovedDisplayCoordinates(vout_display_t *vd, video_orientation_t orient_display, int m_x, int m_y, vout_display_place_t *place)
{
    video_format_t source_rot = vd->source;
    video_format_TransformTo(&source_rot, orient_display);

    if (place->width > 0 && place->height > 0) {

        int x = (int)(source_rot.i_x_offset +
                            (int64_t)(m_x - place->x) * source_rot.i_visible_width / place->width);
        int y = (int)(source_rot.i_y_offset +
                            (int64_t)(m_y - place->y) * source_rot.i_visible_height/ place->height);

        video_transform_t transform = video_format_GetTransform(vd->source.orientation, orient_display);

        int store;

        switch (transform) {

            case TRANSFORM_R90:
                store = x;
                x = y;
                y = vd->source.i_visible_height - store;
                break;
            case TRANSFORM_R180:
                x = vd->source.i_visible_width - x;
                y = vd->source.i_visible_height - y;
                break;
            case TRANSFORM_R270:
                store = x;
                x = vd->source.i_visible_width - y;
                y = store;
                break;
            case TRANSFORM_HFLIP:
                x = vd->source.i_visible_width - x;
                break;
            case TRANSFORM_VFLIP:
                y = vd->source.i_visible_height - y;
                break;
            case TRANSFORM_TRANSPOSE:
                store = x;
                x = y;
                y = store;
                break;
            case TRANSFORM_ANTI_TRANSPOSE:
                store = x;
                x = vd->source.i_visible_width - y;
                y = vd->source.i_visible_height - store;
                break;
            default:
                break;
        }

        vout_display_SendEventMouseMoved (vd, x, y);
    }
}

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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;
    struct {
        unsigned num;
        unsigned den;
    } sar_initial;

    /* */
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    unsigned width_saved;
    unsigned height_saved;
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    struct {
        unsigned num;
        unsigned den;
    } crop_saved;

    /* */
    bool ch_display_filled;
    bool is_display_filled;

    bool ch_zoom;
    struct {
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        unsigned num;
        unsigned den;
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    } zoom;
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#if defined(_WIN32) || defined(__OS2__)
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    bool ch_wm_state;
    unsigned wm_state;
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    unsigned wm_state_initial;
#endif
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    bool ch_sar;
    struct {
        unsigned num;
        unsigned den;
    } sar;

    bool ch_crop;
    struct {
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        int      left;
        int      top;
        int      right;
        int      bottom;
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        unsigned num;
        unsigned den;
    } crop;

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    bool ch_viewpoint;
    vlc_viewpoint_t viewpoint;

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    /* */
    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;
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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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};

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static int VoutDisplayCreateRender(vout_display_t *vd)
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{
    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)
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        return 0;
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    msg_Dbg(vd, "A filter to adapt decoder %4.4s to display %4.4s is needed",
            (const char *)&v_src.i_chroma, (const char *)&v_dst.i_chroma);
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    filter_owner_t owner = {
        .sys = vd,
        .video = {
            .buffer_new = VideoBufferNew,
        },
    };

    osys->filters = filter_chain_NewVideo(vd, false, &owner);
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    if (unlikely(osys->filters == NULL))
        abort(); /* TODO critical */
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    /* */
    es_format_t src;
    es_format_InitFromVideo(&src, &v_src);

    /* */
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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_t dst;
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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);
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        es_format_Clean(&dst);
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        if (filter)
            break;
    }
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    es_format_Clean(&src);
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    if (filter == NULL) {
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        msg_Err(vd, "Failed to adapt decoder format to display");
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        filter_chain_Delete(osys->filters);
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        osys->filters = NULL;
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        return -1;
    }
    return 0;
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}

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

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

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static int VoutDisplayResetRender(vout_display_t *vd)
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{
    VoutDisplayDestroyRender(vd);
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    return VoutDisplayCreateRender(vd);
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}
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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);

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        //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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        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:
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        vlc_assert_unreachable();
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    }

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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);
    vout_SendDisplayEventMouse(osys->vout, &m);
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    vlc_mutex_unlock(&osys->lock);
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}

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VLC_NORETURN
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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.needs_event_thread)
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            VoutDisplayEventKey(vd, key);
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        else
            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;
670 671 672 673 674 675

    case VOUT_DISPLAY_EVENT_FULLSCREEN: {
        const int is_fullscreen = (int)va_arg(args, int);

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

676 677 678 679 680 681
        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);
682 683
        break;
    }
684
#if defined(_WIN32) || defined(__OS2__)
685 686
    case VOUT_DISPLAY_EVENT_WINDOW_STATE: {
        const unsigned state = va_arg(args, unsigned);
687

688
        msg_Dbg(vd, "VoutDisplayEvent 'window state' %u", state);
689 690

        vlc_mutex_lock(&osys->lock);
691 692 693
        if (state != osys->wm_state) {
            osys->ch_wm_state = true;
            osys->wm_state = state;
694 695 696 697
        }
        vlc_mutex_unlock(&osys->lock);
        break;
    }
698
#endif
699 700 701
    case VOUT_DISPLAY_EVENT_DISPLAY_SIZE: {
        const int width  = (int)va_arg(args, int);
        const int height = (int)va_arg(args, int);
702
        msg_Dbg(vd, "VoutDisplayEvent 'resize' %dx%d", width, height);
703 704

        /* */
705 706
        vlc_mutex_lock(&osys->lock);

707 708 709
        osys->ch_display_size   = true;
        osys->display_width     = width;
        osys->display_height    = height;
710 711

        vlc_mutex_unlock(&osys->lock);
712 713 714 715 716 717 718 719
        break;
    }

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

        /* */
        assert(vd->info.has_pictures_invalid);
720 721

        vlc_mutex_lock(&osys->lock);
722
        osys->reset_pictures = true;
723
        vlc_mutex_unlock(&osys->lock);
724 725 726 727 728 729 730 731 732
        break;
    }
    default:
        msg_Err(vd, "VoutDisplayEvent received event %d", event);
        /* TODO add an assert when all event are handled */
        break;
    }
}

733
static vout_window_t *VoutDisplayNewWindow(vout_display_t *vd, unsigned type)
734 735
{
    vout_display_owner_sys_t *osys = vd->owner.sys;
736
    vout_window_t *window = vout_NewDisplayWindow(osys->vout, type);
737 738 739
    if (window != NULL)
        vout_display_window_Attach(window, vd);
    return window;
740
}
741

742 743 744 745
static void VoutDisplayDelWindow(vout_display_t *vd, vout_window_t *window)
{
    vout_display_owner_sys_t *osys = vd->owner.sys;

746 747
    if (window != NULL)
        vout_display_window_Detach(window);
748
    vout_DeleteDisplayWindow(osys->vout, window);
749 750
}

751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771
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);
772
    vout_SetDisplayWindowSize(osys->vout, display_width, display_height);
773 774
}

775
static void VoutDisplayCropRatio(int *left, int *top, int *right, int *bottom,
776 777 778 779 780 781 782
                                 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) {
783 784 785 786
        *left   = (source->i_visible_width - scaled_width) / 2;
        *top    = 0;
        *right  = *left + scaled_width;
        *bottom = *top  + source->i_visible_height;
787
    } else {
788 789 790 791
        *left   = 0;
        *top    = (source->i_visible_height - scaled_height) / 2;
        *right  = *left + source->i_visible_width;
        *bottom = *top  + scaled_height;
792 793 794
    }
}

795
bool vout_ManageDisplay(vout_display_t *vd, bool allow_reset_pictures)
796 797 798 799 800 801 802
{
    vout_display_owner_sys_t *osys = vd->owner.sys;

    vout_display_Manage(vd);

    /* Handle mouse timeout */
    const mtime_t date = mdate();
803 804 805 806
    bool  hide_mouse = false;

    vlc_mutex_lock(&osys->lock);

807 808
    if (!osys->mouse.is_hidden &&
        osys->mouse.last_moved + osys->mouse.hide_timeout < date) {
809 810
        osys->mouse.is_hidden = hide_mouse = true;
    } else if (osys->mouse.ch_activity) {
811 812
        if (osys->mouse.is_hidden)
            vout_HideWindowMouse(osys->vout, false);
813 814 815 816 817 818
        osys->mouse.is_hidden = false;
    }
    osys->mouse.ch_activity = false;
    vlc_mutex_unlock(&osys->lock);

    if (hide_mouse) {
819 820 821
        msg_Dbg(vd, "auto hiding mouse cursor");
        if (vout_HideWindowMouse(osys->vout, true) != VLC_SUCCESS
         && !vd->info.has_hide_mouse)
822 823 824 825
            vout_display_Control(vd, VOUT_DISPLAY_HIDE_MOUSE);
        vout_SendEventMouseHidden(osys->vout);
    }

826
    bool reset_render = false;
827
    for (;;) {
828 829 830 831 832 833 834

        vlc_mutex_lock(&osys->lock);

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

835
#if defined(_WIN32) || defined(__OS2__)
836 837 838
        bool ch_wm_state  = osys->ch_wm_state;
        unsigned wm_state  = osys->wm_state;
        osys->ch_wm_state = false;
839
#endif
840

841 842 843 844 845
        bool ch_display_size       = osys->ch_display_size;
        int  display_width         = osys->display_width;
        int  display_height        = osys->display_height;
        osys->ch_display_size = false;

846 847 848 849 850 851 852
        bool reset_pictures;
        if (allow_reset_pictures) {
            reset_pictures = osys->reset_pictures;
            osys->reset_pictures = false;
        } else {
            reset_pictures = false;
        }
853 854 855 856 857 858

        vlc_mutex_unlock(&osys->lock);

        if (!ch_fullscreen &&
            !ch_display_size &&
            !reset_pictures &&
859 860
            !osys->ch_display_filled &&
            !osys->ch_zoom &&
861
#if defined(_WIN32) || defined(__OS2__)
862
            !ch_wm_state &&
863
#endif
864
            !osys->ch_sar &&
865 866
            !osys->ch_crop &&
            !osys->ch_viewpoint) {
867 868 869 870 871 872

            if (!osys->cfg.is_fullscreen && osys->fit_window != 0) {
                VoutDisplayFitWindow(vd, osys->fit_window == -1);
                osys->fit_window = 0;
                continue;
            }
873
            break;
874
        }
875 876

        /* */
877
        if (ch_fullscreen) {
878 879
            if (vout_display_Control(vd, VOUT_DISPLAY_CHANGE_FULLSCREEN,
                                     is_fullscreen) == VLC_SUCCESS) {
880 881 882 883 884 885
                osys->cfg.is_fullscreen = is_fullscreen;

                if (!is_fullscreen)
                    vout_SetDisplayWindowSize(osys->vout, osys->width_saved,
                                              osys->height_saved);
            } else {
886
                is_fullscreen = osys->cfg.is_fullscreen;
887 888

                msg_Err(vd, "Failed to set fullscreen");
889 890 891 892
            }
        }

        /* */
893
        if (ch_display_size) {
894
            vout_display_cfg_t cfg = osys->cfg;
895 896
            cfg.display.width  = display_width;
            cfg.display.height = display_height;
897

898 899 900
            osys->width_saved  = osys->cfg.display.width;
            osys->height_saved = osys->cfg.display.height;

901
            vout_display_Control(vd, VOUT_DISPLAY_CHANGE_DISPLAY_SIZE, &cfg);
902

903 904
            osys->cfg.display.width  = display_width;
            osys->cfg.display.height = display_height;
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
        }
        /* */
        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;
        }
        /* */
        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;
938 939
            } else {
                osys->fit_window = -1;
940 941 942 943 944 945
            }

            osys->cfg.zoom.num = osys->zoom.num;
            osys->cfg.zoom.den = osys->zoom.den;
            osys->ch_zoom = false;
        }
946
#if defined(_WIN32) || defined(__OS2__)
947
        /* */
948 949
        if (ch_wm_state) {
            if (vout_display_Control(vd, VOUT_DISPLAY_CHANGE_WINDOW_STATE, wm_state)) {
950
                msg_Err(vd, "Failed to set on top");
951
                wm_state = osys->wm_state;
952
            }
953
            osys->wm_state_initial = wm_state;
954
        }
955
#endif
956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975
        /* */
        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;
976 977
            } else if (!osys->fit_window) {
                osys->fit_window = 1;
978 979 980 981 982 983
            }
            vd->source = source;
            osys->sar.num = source.i_sar_num;
            osys->sar.den = source.i_sar_den;
            osys->ch_sar  = false;

984 985 986
            /* If a crop ratio is requested, recompute the parameters */
            if (osys->crop.num > 0 && osys->crop.den > 0)
                osys->ch_crop = true;
987 988 989 990
        }
        /* */
        if (osys->ch_crop) {
            video_format_t source = vd->source;
991

992 993
            unsigned crop_num = osys->crop.num;
            unsigned crop_den = osys->crop.den;
994 995 996 997
            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;
998 999
                VoutDisplayCropRatio(&osys->crop.left,  &osys->crop.top,
                                     &osys->crop.right, &osys->crop.bottom,
1000 1001
                                     &fmt, crop_num, crop_den);
            }
1002 1003
            const int right_max  = osys->source.i_x_offset + osys->source.i_visible_width;
            const int bottom_max = osys->source.i_y_offset + osys->source.i_visible_height;
1004
            int left   = VLC_CLIP((int)osys->source.i_x_offset + osys->crop.left,
1005
                                0, right_max - 1);
1006
            int top    = VLC_CLIP((int)osys->source.i_y_offset + osys->crop.top,
1007 1008 1009 1010 1011 1012
                                0, bottom_max - 1);
            int right, bottom;
            if (osys->crop.right <= 0)
                right = (int)(osys->source.i_x_offset + osys->source.i_visible_width) + osys->crop.right;
            else
                right = (int)osys->source.i_x_offset + osys->crop.right;
1013
            right = VLC_CLIP(right, left + 1, right_max);
1014 1015 1016 1017
            if (osys->crop.bottom <= 0)
                bottom = (int)(osys->source.i_y_offset + osys->source.i_visible_height) + osys->crop.bottom;
            else
                bottom = (int)osys->source.i_y_offset + osys->crop.bottom;
1018
            bottom = VLC_CLIP(bottom, top + 1, bottom_max);
1019 1020 1021 1022 1023 1024 1025 1026 1027

            source.i_x_offset       = left;
            source.i_y_offset       = top;
            source.i_visible_width  = right - left;
            source.i_visible_height = bottom - top;
            video_format_Print(VLC_OBJECT(vd), "SOURCE ", &osys->source);
            video_format_Print(VLC_OBJECT(vd), "CROPPED", &source);
            if (vout_display_Control(vd, VOUT_DISPLAY_CHANGE_SOURCE_CROP, &source)) {
                msg_Err(vd, "Failed to change source crop TODO implement crop at core");
1028 1029 1030 1031 1032 1033 1034

                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)
                 */
1035 1036
            } else if (!osys->fit_window) {
                osys->fit_window = 1;
1037 1038
            }
            vd->source = source;
1039 1040 1041 1042 1043 1044 1045
            osys->crop.left   = source.i_x_offset - osys->source.i_x_offset;
            osys->crop.top    = source.i_y_offset - osys->source.i_y_offset;
            /* FIXME for right/bottom we should keep the 'type' border vs window */
            osys->crop.right  = (source.i_x_offset + source.i_visible_width) -
                                (osys->source.i_x_offset + osys->source.i_visible_width);
            osys->crop.bottom = (source.i_y_offset + source.i_visible_height) -
                                (osys->source.i_y_offset + osys->source.i_visible_height);
1046 1047 1048 1049
            osys->crop.num    = crop_num;
            osys->crop.den    = crop_den;
            osys->ch_crop = false;
        }
1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061
        if (osys->ch_viewpoint) {
            vout_display_cfg_t cfg = osys->cfg;

            cfg.viewpoint = osys->viewpoint;

            if (vout_display_Control(vd, VOUT_DISPLAY_CHANGE_VIEWPOINT, &cfg)) {
                msg_Err(vd, "Failed to change Viewpoint");
                osys->viewpoint = osys->cfg.viewpoint;
            }
            osys->cfg.viewpoint = osys->viewpoint;
            osys->ch_viewpoint  = false;
        }
1062 1063

        /* */
1064
        if (reset_pictures) {
1065 1066 1067 1068
            if (vout_display_Control(vd, VOUT_DISPLAY_RESET_PICTURES)) {
                /* FIXME what to do here ? */
                msg_Err(vd, "Failed to reset pictures (probably fatal)");
            }
1069
            reset_render = true;
1070 1071
        }
    }
1072
    if (reset_render)
1073
        VoutDisplayResetRender(vd);
1074 1075

    return reset_render;
1076 1077 1078 1079 1080 1081
}

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

1082 1083 1084 1085 1086
    vlc_mutex_lock(&osys->lock);
    const bool reset_pictures = osys->reset_pictures;
    vlc_mutex_unlock(&osys->lock);

    return reset_pictures;
1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099
}

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;

1100
    assert(osys->filters);
1101 1102 1103 1104
    if (filter_chain_GetLength(osys->filters) <= 0) {
        picture_Release(picture);
        return NULL;
    }
1105 1106 1107
    return filter_chain_VideoFilter(osys->filters, picture);
}

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
void vout_UpdateDisplaySourceProperties(vout_display_t *vd, const video_format_t *source)
{
    vout_display_owner_sys_t *osys = vd->owner.sys;

    if (source->i_sar_num * osys->source.i_sar_den !=
        source->i_sar_den * osys->source.i_sar_num) {

        osys->source.i_sar_num = source->i_sar_num;
        osys->source.i_sar_den = source->i_sar_den;
        vlc_ureduce(&osys->source.i_sar_num, &osys->source.i_sar_den,
                    osys->source.i_sar_num, osys->source.i_sar_den, 0);

        /* FIXME it will override any AR that the user would have forced */
        osys->ch_sar = true;
        osys->sar.num = osys->source.i_sar_num;
        osys->sar.den = osys->source.i_sar_den;
    }
    if (source->i_x_offset       != osys->source.i_x_offset ||
        source->i_y_offset       != osys->source.i_y_offset ||
        source->i_visible_width  != osys->source.i_visible_width ||
        source->i_visible_height != osys->source.i_visible_height) {

        video_format_CopyCrop(&osys->source, source);

        /* Force the vout to reapply the current user crop settings over the new decoder
         * crop settings. */
        osys->ch_crop = true;
    }
}

1138 1139 1140 1141
void vout_SetDisplayFullscreen(vout_display_t *vd, bool is_fullscreen)
{
    vout_display_owner_sys_t *osys = vd->owner.sys;

1142
    vlc_mutex_lock(&osys->lock);
1143 1144 1145 1146
    if (!osys->is_fullscreen != !is_fullscreen) {
        osys->ch_fullscreen = true;
        osys->is_fullscreen = is_fullscreen;
    }
1147
    vlc_mutex_unlock(&osys->lock);
1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159
}

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;
    }
}

1160
void vout_SetDisplayZoom(vout_display_t *vd, unsigned num, unsigned den)
1161 1162 1163
{
    vout_display_owner_sys_t *osys = vd->owner.sys;

1164 1165 1166 1167 1168 1169 1170
    if (num > 0 && den > 0) {
        vlc_ureduce(&num, &den, num, den, 0);
    } else {
        num = 1;
        den = 1;
    }

1171 1172
    if (osys->is_display_filled ||
        osys->zoom.num != num || osys->zoom.den != den) {
1173 1174 1175 1176 1177
        osys->ch_zoom = true;
        osys->zoom.num = num;
        osys->zoom.den = den;
    }
}
1178

1179
void vout_SetDisplayAspect(vout_display_t *vd, unsigned dar_num, unsigned dar_den)
1180 1181 1182
{
    vout_display_owner_sys_t *osys = vd->owner.sys;

1183 1184 1185 1186 1187 1188
    unsigned sar_num, sar_den;
    if (dar_num > 0 && dar_den > 0) {
        sar_num = dar_num * osys->source.i_visible_height;
        sar_den = dar_den * osys->source.i_visible_width;
        vlc_ureduce(&sar_num, &sar_den, sar_num, sar_den, 0);
    } else {
1189 1190
        sar_num = 0;
        sar_den = 0;
1191 1192
    }

1193 1194 1195 1196 1197 1198 1199 1200
    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,
1201
                         unsigned left, unsigned top, int right, int bottom)
1202 1203 1204
{
    vout_display_owner_sys_t *osys = vd->owner.sys;

1205 1206
    if (osys->crop.left  != (int)left  || osys->crop.top != (int)top ||
        osys->crop.right != right || osys->crop.bottom != bottom ||
1207 1208
        (crop_num > 0 && crop_den > 0 &&
         (crop_num != osys->crop.num || crop_den != osys->crop.den))) {
1209

1210 1211 1212 1213
        osys->crop.left   = left;
        osys->crop.top    = top;
        osys->crop.right  = right;
        osys->crop.bottom = bottom;
1214 1215