#include <minilib.h>
#include <output.h>
#include <fb.h>
+#include <keyboard.h>
#include "lwip/tcp.h"
+#include "lwip/stats.h"
#include "rfb.h"
#define POINTER_EVENT 5
#define CLIENT_CUT_TEXT 6
-#define RFB_BUF_SIZE 64
+#define RFB_BUF_SIZE 512
+
+#define SCREEN_CHUNKS_X 8
+#define SCREEN_CHUNKS_Y 8
struct pixel_format {
uint8_t bpp;
char text[];
};
+struct update_header {
+ uint8_t msgtype;
+ uint8_t padding;
+ uint16_t nrects;
+ uint16_t xpos;
+ uint16_t ypos;
+ uint16_t width;
+ uint16_t height;
+ int32_t enctype;
+};
+
struct rfb_state {
enum {
- ST_BEGIN,
+ ST_BEGIN = 0,
ST_CLIENTINIT,
ST_MAIN
} state;
int writepos;
char next_update_incremental;
+ char update_requested;
+
struct fb_update_req client_interest_area;
- uint8_t needs_updated;
- uint8_t sending;
+ enum {
+ SST_IDLE = 0,
+ SST_HEADER,
+ SST_DATA
+ } send_state;
+
+ uint32_t checksums[SCREEN_CHUNKS_X][SCREEN_CHUNKS_Y];
+
+ uint32_t chunk_xnum;
+ uint32_t chunk_ynum;
+ uint32_t chunk_xpos;
+ uint32_t chunk_ypos;
+ uint32_t chunk_width;
+ uint32_t chunk_height;
+
+ uint32_t chunk_lindex;
+
+ uint32_t chunk_checksum;
+
+ int chunk_actually_sent;
+ int try_in_a_bit;
};
static struct server_init_message server_info;
}
}
-static void start_send(struct tcp_pcb *pcb, struct rfb_state *state) {
- /* ... */
+static int advance_chunk(struct rfb_state *state) {
+
+ state->chunk_xnum += 1;
+
+ if (state->chunk_xnum == SCREEN_CHUNKS_X) {
+ state->chunk_ynum += 1;
+ state->chunk_xnum = 0;
+ }
+
+ if (state->chunk_ynum == SCREEN_CHUNKS_Y) {
+ state->chunk_ynum = 0;
+ state->send_state = SST_IDLE;
+ if (!(state->chunk_actually_sent))
+ state->try_in_a_bit = 2;
+ return 1;
+ }
+
+ return 0;
+}
+
+static void send_fsm(struct tcp_pcb *pcb, struct rfb_state *state) {
+ struct update_header hdr;
+ int lines_left;
+ unsigned char * lptr;
+ int totaldim;
+ err_t err;
+
+ while(1) {
+
+ switch (state->send_state) {
+
+ case SST_IDLE:
+ /* Nothing to do */
+
+ if (state->update_requested) {
+ outputf("RFB send: update requested");
+ state->update_requested = 0;
+ state->chunk_actually_sent = 0;
+ state->send_state = SST_HEADER;
+ } else {
+ return;
+ }
+
+ /* FALL THROUGH to SST_HEADER */
+
+ case SST_HEADER:
+
+ /* Calculate the width and height for this chunk, remembering
+ * that if SCREEN_CHUNKS_[XY] do not evenly divide the width and
+ * height, we may need to have shorter chunks at the edge of
+ * the screen. */
+
+ state->chunk_width = fb->curmode.xres / SCREEN_CHUNKS_X;
+ if (fb->curmode.xres % SCREEN_CHUNKS_X != 0)
+ state->chunk_width += 1;
+ state->chunk_xpos = state->chunk_width * state->chunk_xnum;
+ totaldim = state->chunk_width * (state->chunk_xnum + 1);
+ if (totaldim > fb->curmode.xres) {
+ state->chunk_width -= (totaldim - fb->curmode.xres);
+ }
+
+ state->chunk_height = fb->curmode.yres / SCREEN_CHUNKS_Y;
+ if (fb->curmode.yres % SCREEN_CHUNKS_Y != 0)
+ state->chunk_height += 1;
+ state->chunk_ypos = state->chunk_height
+ * state->chunk_ynum;
+ totaldim = state->chunk_height * (state->chunk_ynum + 1);
+ if (totaldim > fb->curmode.yres) {
+ state->chunk_height -= (totaldim - fb->curmode.yres);
+ }
+
+ /* Do we _actually_ need to send this chunk? */
+ if (fb->checksum_rect) {
+ state->chunk_checksum = fb->checksum_rect(state->chunk_xpos, state->chunk_ypos,
+ state->chunk_width, state->chunk_height);
+
+ if (state->chunk_checksum == state->checksums[state->chunk_xnum][state->chunk_ynum]) {
+ if (advance_chunk(state))
+ return;
+ continue;
+ }
+ /* Checksum gets set in data block, AFTER the data has been sent. */
+ }
+
+ outputf("actually sent");
+ state->chunk_actually_sent = 1;
+
+ /* Send a header */
+ hdr.msgtype = 0;
+ state->chunk_lindex = 0;
+ hdr.nrects = htons(1);
+ hdr.xpos = htons(state->chunk_xpos);
+ hdr.ypos = htons(state->chunk_ypos);
+ hdr.width = htons(state->chunk_width);
+ hdr.height= htons(state->chunk_height);
+ hdr.enctype = htonl(0);
+ lines_left = state->chunk_height;
+
+ err = tcp_write(pcb, &hdr, sizeof(hdr), TCP_WRITE_FLAG_COPY);
+
+ if (err != ERR_OK) {
+ if (err != ERR_MEM)
+ outputf("RFB: header send error %d", err);
+
+ /* Try again later. */
+ return;
+ }
+
+ state->send_state = SST_DATA;
+
+ /* FALL THROUGH to SST_DATA */
+
+ case SST_DATA:
+
+ lines_left = state->chunk_height - state->chunk_lindex;
+
+ if (lines_left == 0) {
+ state->send_state = SST_HEADER;
+ state->checksums[state->chunk_xnum][state->chunk_ynum] = state->chunk_checksum;
+ if (advance_chunk(state))
+ return;
+ break;
+ }
+
+ lptr = fb->fbaddr
+ + (fb->curmode.xres * fb->curmode.bytestride
+ * (state->chunk_ypos + state->chunk_lindex))
+ + (state->chunk_xpos * fb->curmode.bytestride);
+
+ /* The network card can't DMA from video RAM,
+ * so use TCP_WRITE_FLAG_COPY. */
+ err = tcp_write(pcb, lptr,
+ fb->curmode.bytestride * state->chunk_width, TCP_WRITE_FLAG_COPY);
+
+ if (err == ERR_OK) {
+ state->chunk_lindex += 1;
+ } else {
+ if (err != ERR_MEM)
+ outputf("RFB: send error %d", err);
+
+ return;
+ }
+
+ if (tcp_sndbuf(pcb) == 0) {
+ return;
+ }
+ }
+ }
+
+ if (tcp_output(pcb) != ERR_OK)
+ outputf("RFB: tcp_output bailed in send_fsm?");
+}
+
+static err_t rfb_sent(void *arg, struct tcp_pcb *pcb, uint16_t len) {
+ struct rfb_state *state = arg;
+ send_fsm(pcb, state);
+ return ERR_OK;
+}
+
+static err_t rfb_poll(void *arg, struct tcp_pcb *pcb) {
+ struct rfb_state *state = arg;
+ send_fsm(pcb, state);
+ if (state->try_in_a_bit) {
+ state->try_in_a_bit--;
+ if (!(state->try_in_a_bit)) {
+ state->update_requested = 1;
+ }
+ }
+/*
+ stats_display();
+*/
+ return ERR_OK;
}
static void close_conn(struct tcp_pcb *pcb, struct rfb_state *state) {
state->state = ST_MAIN;
outputf("RFB: Sending server info", state->version);
- tcp_write(pcb, &server_info, sizeof(server_info), 0);
+ tcp_write(pcb, &server_info, sizeof(server_info), TCP_WRITE_FLAG_COPY);
tcp_output(pcb);
return OK;
for (i = 0; i < ntohs(req->num); i++) {
outputf("RFB: Encoding: %d", ntohl(req->encodings[i]));
/* XXX ... */
-
}
state->readpos += pktsize;
return NEEDMORE;
outputf("RFB: UpdateRequest");
- state->needs_updated = 1;
+ state->update_requested = 1;
memcpy(&state->client_interest_area, state->data,
sizeof(struct fb_update_req));
case KEY_EVENT:
if (state->writepos < sizeof(struct key_event_pkt))
return NEEDMORE;
- outputf("RFB: Key");
- /* XXX stub */
+ struct key_event_pkt * p = (struct key_event_pkt *)state->data;
+
+ outputf("RFB: Key: %d (%c)", htonl(p->keysym), (htonl(p->keysym) & 0xFF));
+ kbd_inject_keysym(htonl(p->keysym), p->downflag);
state->readpos += sizeof(struct key_event_pkt);
return OK;
(struct text_event_pkt *)state->data;
if (state->writepos < sizeof(struct text_event_pkt)
- + pkt->length)
+ + pkt->length)
return NEEDMORE;
/* XXX stub */
state->readpos += sizeof(struct text_event_pkt)
- + pkt->length;
+ + pkt->length;
return OK;
default:
}
static err_t rfb_recv(void *arg, struct tcp_pcb *pcb,
- struct pbuf *p, err_t err) {
+ struct pbuf *p, err_t err) {
struct rfb_state *state = arg;
if (state == NULL)
case OK:
outputf("RFB FSM: ok");
- /* Might as well send now... */
- if (state->needs_updated && !state->sending) {
- start_send(pcb, state);
+ /* Kick off a send. */
+ if (state->send_state == SST_IDLE
+ && state->update_requested) {
+ send_fsm(pcb, state);
}
if (state->readpos == state->writepos) {
return ERR_OK;
} else {
memmove(state->data,
- state->data + state->readpos,
- state->writepos - state->readpos);
+ state->data + state->readpos,
+ state->writepos - state->readpos);
}
break;
case FAIL:
state = (struct rfb_state *)mem_malloc(sizeof(struct rfb_state));
+ memset(state, 0, sizeof(struct rfb_state));
+
state->state = ST_BEGIN;
- state->readpos = 0;
- state->writepos = 0;
- state->needs_updated = 0;
- state->sending = 0;
+ state->send_state = SST_IDLE;
/* XXX: update_server_info() should be called from the 64ms timer, and deal
* with screen resizes appropriately. */
tcp_arg(pcb, state);
tcp_recv(pcb, rfb_recv);
+ tcp_sent(pcb, rfb_sent);
+ tcp_poll(pcb, rfb_poll, 1);
/*
tcp_err(pcb, rfb_err);
- tcp_poll(pcb, rfb_poll, 2);
*/
tcp_write(pcb, "RFB 003.008\n", 12, 0);
tcp_output(pcb);
git.joshuawise.com / netwatch.git / blobdiff