spice/server/dcc.c

/* -*- Mode: C; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
   Copyright (C) 2009-2015 Red Hat, Inc.

   This library 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 (at your option) any later version.

   This library 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "dcc.h"
#include "display-channel.h"

DisplayChannelClient *dcc_new(DisplayChannel *display,
                              RedClient *client, RedsStream *stream,
                              int mig_target,
                              uint32_t *common_caps, int num_common_caps,
                              uint32_t *caps, int num_caps,
                              SpiceImageCompression image_compression,
                              spice_wan_compression_t jpeg_state,
                              spice_wan_compression_t zlib_glz_state)

{
    DisplayChannelClient *dcc;

    dcc = (DisplayChannelClient*)common_channel_new_client(
        COMMON_CHANNEL(display), sizeof(DisplayChannelClient),
        client, stream, mig_target, TRUE,
        common_caps, num_common_caps,
        caps, num_caps);
    spice_return_val_if_fail(dcc, NULL);

    ring_init(&dcc->palette_cache_lru);
    dcc->palette_cache_available = CLIENT_PALETTE_CACHE_SIZE;
    dcc->image_compression = image_compression;
    dcc->jpeg_state = jpeg_state;
    dcc->zlib_glz_state = zlib_glz_state;
    // TODO: tune quality according to bandwidth
    dcc->jpeg_quality = 85;

    dcc_encoders_init(dcc);

    return dcc;
}

void dcc_stream_agent_clip(DisplayChannelClient* dcc, StreamAgent *agent)
{
    StreamClipItem *item = stream_clip_item_new(dcc, agent);
    int n_rects;

    item->clip_type = SPICE_CLIP_TYPE_RECTS;

    n_rects = pixman_region32_n_rects(&agent->clip);
    item->rects = spice_malloc_n_m(n_rects, sizeof(SpiceRect), sizeof(SpiceClipRects));
    item->rects->num_rects = n_rects;
    region_ret_rects(&agent->clip, item->rects->rects, n_rects);

    red_channel_client_pipe_add(RED_CHANNEL_CLIENT(dcc), (PipeItem *)item);
}

static MonitorsConfigItem *monitors_config_item_new(RedChannel* channel,
                                                    MonitorsConfig *monitors_config)
{
    MonitorsConfigItem *mci;

    mci = (MonitorsConfigItem *)spice_malloc(sizeof(*mci));
    mci->monitors_config = monitors_config;

    red_channel_pipe_item_init(channel,
                               &mci->pipe_item, PIPE_ITEM_TYPE_MONITORS_CONFIG);
    return mci;
}

void dcc_push_monitors_config(DisplayChannelClient *dcc)
{
    DisplayChannel *dc = DCC_TO_DC(dcc);
    MonitorsConfig *monitors_config = dc->monitors_config;
    MonitorsConfigItem *mci;

    if (monitors_config == NULL) {
        spice_warning("monitors_config is NULL");
        return;
    }

    if (!red_channel_client_test_remote_cap(&dcc->common.base,
                                            SPICE_DISPLAY_CAP_MONITORS_CONFIG)) {
        return;
    }

    mci = monitors_config_item_new(dcc->common.base.channel,
                                   monitors_config_ref(dc->monitors_config));
    red_channel_client_pipe_add(&dcc->common.base, &mci->pipe_item);
    red_channel_client_push(&dcc->common.base);
}

static SurfaceDestroyItem *surface_destroy_item_new(RedChannel *channel,
                                                    uint32_t surface_id)
{
    SurfaceDestroyItem *destroy;

    destroy = spice_malloc(sizeof(SurfaceDestroyItem));
    destroy->surface_destroy.surface_id = surface_id;
    red_channel_pipe_item_init(channel, &destroy->pipe_item,
                               PIPE_ITEM_TYPE_DESTROY_SURFACE);

    return destroy;
}

void dcc_destroy_surface(DisplayChannelClient *dcc, uint32_t surface_id)
{
    DisplayChannel *display;
    RedChannel *channel;
    SurfaceDestroyItem *destroy;

    if (!dcc) {
        return;
    }

    display = DCC_TO_DC(dcc);
    channel = RED_CHANNEL(display);

    if (COMMON_CHANNEL(display)->during_target_migrate ||
        !dcc->surface_client_created[surface_id]) {
        return;
    }

    dcc->surface_client_created[surface_id] = FALSE;
    destroy = surface_destroy_item_new(channel, surface_id);
    red_channel_client_pipe_add(RED_CHANNEL_CLIENT(dcc), &destroy->pipe_item);
}