wlroots/backend/rdp/output.c

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#include <assert.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <stdlib.h>
#include <wayland-server.h>
#include <wlr/types/wlr_output.h>
#include <wlr/interfaces/wlr_output.h>
#include <wlr/util/log.h>
#include <wlr/render/wlr_renderer.h>
#include "backend/rdp.h"
#include "util/signal.h"
static struct wlr_rdp_output *rdp_output_from_output(
struct wlr_output *wlr_output) {
assert(wlr_output_is_rdp(wlr_output));
return (struct wlr_rdp_output *)wlr_output;
}
static EGLSurface egl_create_surface(struct wlr_egl *egl, unsigned int width,
unsigned int height) {
EGLint attribs[] = {
EGL_WIDTH, width,
EGL_HEIGHT, height,
EGL_NONE,
};
EGLSurface surf = eglCreatePbufferSurface(egl->display, egl->config, attribs);
if (surf == EGL_NO_SURFACE) {
wlr_log(WLR_ERROR, "Failed to create EGL surface");
return EGL_NO_SURFACE;
}
return surf;
}
static bool output_set_custom_mode(struct wlr_output *wlr_output, int32_t width,
int32_t height, int32_t refresh) {
struct wlr_rdp_output *output =
rdp_output_from_output(wlr_output);
struct wlr_rdp_backend *backend = output->backend;
if (refresh <= 0) {
refresh = 60 * 1000; // 60 Hz
}
wlr_egl_destroy_surface(&backend->egl, output->egl_surface);
output->egl_surface = egl_create_surface(&backend->egl, width, height);
if (output->egl_surface == EGL_NO_SURFACE) {
wlr_log(WLR_ERROR, "Failed to recreate EGL surface");
wlr_output_destroy(wlr_output);
return false;
}
output->frame_delay = 1000000 / refresh;
if (output->shadow_surface) {
pixman_image_unref(output->shadow_surface);
}
output->shadow_surface = pixman_image_create_bits(PIXMAN_x8r8g8b8,
width, height, NULL, width * 4);
wlr_output_update_custom_mode(&output->wlr_output, width, height, refresh);
return true;
}
static void output_transform(struct wlr_output *wlr_output,
enum wl_output_transform transform) {
struct wlr_rdp_output *output =
rdp_output_from_output(wlr_output);
output->wlr_output.transform = transform;
}
static bool output_attach_render(struct wlr_output *wlr_output,
int *buffer_age) {
struct wlr_rdp_output *output =
rdp_output_from_output(wlr_output);
return wlr_egl_make_current(&output->backend->egl, output->egl_surface,
buffer_age);
}
static bool rfx_swap_buffers(
struct wlr_rdp_output *output, pixman_region32_t *damage) {
struct wlr_rdp_peer_context *context = output->context;
freerdp_peer *peer = context->peer;
rdpUpdate *update = peer->update;
Stream_Clear(context->encode_stream);
Stream_SetPosition(context->encode_stream, 0);
int width = damage->extents.x2 - damage->extents.x1;
int height = damage->extents.y2 - damage->extents.y1;
SURFACE_BITS_COMMAND cmd;
cmd.skipCompression = TRUE;
cmd.destLeft = damage->extents.x1;
cmd.destTop = damage->extents.y1;
cmd.destRight = damage->extents.x2;
cmd.destBottom = damage->extents.y2;
cmd.bmp.bpp = pixman_image_get_depth(output->shadow_surface);
cmd.bmp.codecID = peer->settings->RemoteFxCodecId;
cmd.bmp.width = width;
cmd.bmp.height = height;
uint32_t *ptr = pixman_image_get_data(output->shadow_surface) +
damage->extents.x1 + damage->extents.y1 *
(pixman_image_get_stride(output->shadow_surface) / sizeof(uint32_t));
RFX_RECT *rfx_rect;
int nrects;
pixman_box32_t *rects =
pixman_region32_rectangles(damage, &nrects);
rfx_rect = realloc(context->rfx_rects, nrects * sizeof(*rfx_rect));
if (rfx_rect == NULL) {
wlr_log(WLR_ERROR, "RDP swap buffers failed: could not realloc rects");
return false;
}
context->rfx_rects = rfx_rect;
for (int i = 0; i < nrects; ++i) {
pixman_box32_t *region = &rects[i];
rfx_rect = &context->rfx_rects[i];
rfx_rect->x = region->x1 - damage->extents.x1;
rfx_rect->y = region->y1 - damage->extents.y1;
rfx_rect->width = region->x2 - region->x1;
rfx_rect->height = region->y2 - region->y1;
}
rfx_compose_message(context->rfx_context, context->encode_stream,
context->rfx_rects, nrects, (BYTE *)ptr, width, height,
pixman_image_get_stride(output->shadow_surface));
cmd.bmp.bitmapDataLength = Stream_GetPosition(context->encode_stream);
cmd.bmp.bitmapData = Stream_Buffer(context->encode_stream);
update->SurfaceBits(update->context, &cmd);
return true;
}
static bool nsc_swap_buffers(
struct wlr_rdp_output *output, pixman_region32_t *damage) {
struct wlr_rdp_peer_context *context = output->context;
freerdp_peer *peer = context->peer;
rdpUpdate *update = peer->update;
Stream_Clear(context->encode_stream);
Stream_SetPosition(context->encode_stream, 0);
int width = damage->extents.x2 - damage->extents.x1;
int height = damage->extents.y2 - damage->extents.y1;
SURFACE_BITS_COMMAND cmd;
cmd.skipCompression = TRUE;
cmd.destLeft = damage->extents.x1;
cmd.destTop = damage->extents.y1;
cmd.destRight = damage->extents.x2;
cmd.destBottom = damage->extents.y2;
cmd.bmp.bpp = pixman_image_get_depth(output->shadow_surface);
cmd.bmp.codecID = peer->settings->NSCodecId;
cmd.bmp.width = width;
cmd.bmp.height = height;
uint32_t *ptr = pixman_image_get_data(output->shadow_surface) +
damage->extents.x1 + damage->extents.y1 *
(pixman_image_get_stride(output->shadow_surface) / sizeof(uint32_t));
nsc_compose_message(context->nsc_context, context->encode_stream,
(BYTE *)ptr, width, height,
pixman_image_get_stride(output->shadow_surface));
cmd.bmp.bitmapDataLength = Stream_GetPosition(context->encode_stream);
cmd.bmp.bitmapData = Stream_Buffer(context->encode_stream);
update->SurfaceBits(update->context, &cmd);
return true;
}
static bool output_commit(struct wlr_output *wlr_output) {
struct wlr_rdp_output *output =
rdp_output_from_output(wlr_output);
bool ret = false;
pixman_region32_t output_region;
pixman_region32_init(&output_region);
pixman_region32_union_rect(&output_region, &output_region,
0, 0, wlr_output->width, wlr_output->height);
pixman_region32_t *damage = &output_region;
if (wlr_output->pending.committed & WLR_OUTPUT_STATE_DAMAGE) {
damage = &wlr_output->pending.damage;
}
int x = damage->extents.x1;
int y = damage->extents.y1;
int width = damage->extents.x2 - damage->extents.x1;
int height = damage->extents.y2 - damage->extents.y1;
// Update shadow buffer
struct wlr_renderer *renderer =
wlr_backend_get_renderer(&output->backend->backend);
// TODO performance: add support for flags
ret = wlr_renderer_read_pixels(renderer, WL_SHM_FORMAT_XRGB8888,
NULL, pixman_image_get_stride(output->shadow_surface),
width, height, x, y, x, y,
pixman_image_get_data(output->shadow_surface));
if (!ret) {
goto out;
}
// Send along to clients
rdpSettings *settings = output->context->peer->settings;
if (settings->RemoteFxCodec) {
ret = rfx_swap_buffers(output, damage);
} else if (settings->NSCodec) {
ret = nsc_swap_buffers(output, damage);
} else {
// This would perform like ass so why bother
wlr_log(WLR_ERROR, "Raw updates are not supported; use rfx or nsc");
ret = false;
}
if (!ret) {
goto out;
}
wlr_output_send_present(wlr_output, NULL);
out:
pixman_region32_fini(&output_region);
return ret;
}
static void output_destroy(struct wlr_output *wlr_output) {
struct wlr_rdp_output *output =
rdp_output_from_output(wlr_output);
if (output->frame_timer) {
wl_event_source_remove(output->frame_timer);
}
wlr_egl_destroy_surface(&output->backend->egl, output->egl_surface);
if (output->shadow_surface) {
pixman_image_unref(output->shadow_surface);
}
free(output);
}
static const struct wlr_output_impl output_impl = {
.set_custom_mode = output_set_custom_mode,
.transform = output_transform,
.destroy = output_destroy,
.attach_render = output_attach_render,
.commit = output_commit,
};
bool wlr_output_is_rdp(struct wlr_output *wlr_output) {
return wlr_output->impl == &output_impl;
}
static int signal_frame(void *data) {
struct wlr_rdp_output *output = data;
wlr_output_send_frame(&output->wlr_output);
wl_event_source_timer_update(output->frame_timer, output->frame_delay);
return 0;
}
struct wlr_rdp_output *wlr_rdp_output_create(struct wlr_rdp_backend *backend,
struct wlr_rdp_peer_context *context, unsigned int width,
unsigned int height) {
struct wlr_rdp_output *output =
calloc(1, sizeof(struct wlr_rdp_output));
if (output == NULL) {
wlr_log(WLR_ERROR, "Failed to allocate wlr_rdp_output");
return NULL;
}
output->backend = backend;
output->context = context;
wlr_output_init(&output->wlr_output, &backend->backend, &output_impl,
backend->display);
struct wlr_output *wlr_output = &output->wlr_output;
output->egl_surface = egl_create_surface(&backend->egl, width, height);
if (output->egl_surface == EGL_NO_SURFACE) {
wlr_log(WLR_ERROR, "Failed to create EGL surface");
goto error;
}
output_set_custom_mode(wlr_output, width, height, 0);
strncpy(wlr_output->make, "RDP", sizeof(wlr_output->make));
strncpy(wlr_output->model, "RDP", sizeof(wlr_output->model));
snprintf(wlr_output->name, sizeof(wlr_output->name), "RDP-%d",
wl_list_length(&backend->clients));
if (!wlr_egl_make_current(&output->backend->egl, output->egl_surface,
NULL)) {
goto error;
}
wlr_renderer_begin(backend->renderer, wlr_output->width, wlr_output->height);
wlr_renderer_clear(backend->renderer, (float[]){ 1.0, 1.0, 1.0, 1.0 });
wlr_renderer_end(backend->renderer);
struct wl_event_loop *ev = wl_display_get_event_loop(backend->display);
output->frame_timer = wl_event_loop_add_timer(ev, signal_frame, output);
wl_event_source_timer_update(output->frame_timer, output->frame_delay);
wlr_output_update_enabled(wlr_output, true);
wlr_signal_emit_safe(&backend->backend.events.new_output, wlr_output);
return output;
error:
wlr_output_destroy(&output->wlr_output);
return NULL;
}