Move some text rendering prints around.

[netwatch.git] / net / rfb.c

diff --git a/net/rfb.c b/net/rfb.c
index 5735db12c9863271f55b2f72efe99b65e6a5ac7a..cd813eb6357ea9b0a5835fc3c457dbed304e13e4 100644 (file)
--- a/net/rfb.c
+++ b/net/rfb.c
@@ -6,6 +6,7 @@
 #include "../aseg-paging/keyboard.h"
 
 #include "lwip/tcp.h"
 #include "../aseg-paging/keyboard.h"
 
 #include "lwip/tcp.h"

+#include "lwip/stats.h"

 
 #include "rfb.h"
 
 
 #include "rfb.h"
 


@@ -16,7 +17,10 @@
 #define POINTER_EVENT          5
 #define CLIENT_CUT_TEXT                6
 
 #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;
 
 struct pixel_format {
        uint8_t bpp;


@@ -108,12 +112,24 @@ struct rfb_state {
 
        enum {
                SST_IDLE,
 
        enum {
                SST_IDLE,

-               SST_NEEDS_UPDATE,
-               SST_SENDING
+               SST_HEADER,
+               SST_DATA

        } send_state;
 
        } send_state;
 

-       uint32_t update_pos;
-       uint32_t frame_bytes;
+       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;
+
+       uint32_t chunk_actually_sent;

 };
 
 static struct server_init_message server_info;
 };
 
 static struct server_init_message server_info;


@@ -150,75 +166,159 @@ static void update_server_info() {
        }
 }
 
        }
 }
 

+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->update_requested = 1;
+                       return 1;
+       }
+
+       return 0;
+}
+

 static void send_fsm(struct tcp_pcb *pcb, struct rfb_state *state) {
        struct update_header hdr;
 static void send_fsm(struct tcp_pcb *pcb, struct rfb_state *state) {
        struct update_header hdr;

-       int left, sndlength;
+       int lines_left;
+       unsigned char * lptr;
+       int totaldim;

        err_t err;
 
        err_t err;
 

-       switch (state->send_state) {
-       case SST_IDLE:
-               /* Nothing to do */
-               if (state->update_requested) {
-                       outputf("RFB send: update requested");
-                       state->update_requested = 0;
-                       state->send_state = SST_NEEDS_UPDATE;
-               } else {
-                       break;
-               }
+       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_NEEDS_UPDATE*/
-       case SST_NEEDS_UPDATE:
-               outputf("RFB send: sending header");
-               /* Send a header */
-               state->frame_bytes = fb->curmode.xres * fb->curmode.yres * fb->curmode.bytestride;
-               hdr.msgtype = 0;
-               hdr.nrects = htons(1);
-               hdr.xpos = htons(0);
-               hdr.ypos = htons(0);
-               hdr.width = htons(fb->curmode.xres);
-               hdr.height = htons(fb->curmode.yres);
-               hdr.enctype = htonl(0);
-               tcp_write(pcb, &hdr, sizeof(hdr), TCP_WRITE_FLAG_COPY);
-
-               state->update_pos = 0;
-               state->send_state = SST_SENDING;
-
-               /* FALL THROUGH to SST_SENDING*/
-       case SST_SENDING:
-               while (1) {
-                       left = state->frame_bytes - state->update_pos;
-
-                       if (left == 0) {
-                               state->send_state = SST_IDLE;
-                               break;
+                       /* 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);
+                       }
+
+                       outputf("rfb send: (%d [%d], %d [%d]) %d x %d",
+                               state->chunk_xnum, state->chunk_xpos,
+                               state->chunk_ynum, state->chunk_ypos,
+                               state->chunk_width, state->chunk_height);
+
+                       /* 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]) {
+                                       outputf("!!!!!!! SKIPPING: %08x", state->chunk_checksum);
+                                       if (advance_chunk(state))
+                                               return;
+                                       continue;
+                               }
+                               /* Checksum gets set in data block, AFTER the data has been sent. */

                        }
                        }

-                       
-                       if (left > 8192)        /* Sounds good enough to me. */
-                               left = 8192;

 
 

-                       sndlength = left;
-                       do {
-                               err = tcp_write(pcb, fb->fbaddr + state->update_pos, sndlength, TCP_WRITE_FLAG_COPY /* The card can't DMA from there. */);
-                               if (err == ERR_MEM)             /* Back down until lwip says we've got space. */
-                                       sndlength /= 2;
-                       } while (err == ERR_MEM && sndlength > 1);
+                       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)
 
                        if (err != ERR_OK) {
                                if (err != ERR_MEM)

-                                       outputf("RFB: send error %d", err);
-                               
-                               /* We'll just give up for now and come back when we have space later. */
+                                       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;
                        }
 
                                break;
                        }
 

-                       state->update_pos += sndlength;
+                       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) {
                        if (tcp_sndbuf(pcb) == 0) {

-                               break;
+                               return;

                        }
                }
                        }
                }

-
-               break;

        }
        
        if (tcp_output(pcb) != ERR_OK)
        }
        
        if (tcp_output(pcb) != ERR_OK)


@@ -231,6 +331,15 @@ static err_t rfb_sent(void *arg, struct tcp_pcb *pcb, uint16_t len) {
        return ERR_OK;
 }
 
        return ERR_OK;
 }
 

+static err_t rfb_poll(void *arg, struct tcp_pcb *pcb) {
+       struct rfb_state *state = arg;
+       send_fsm(pcb, state);
+/*
+       stats_display();
+*/
+       return ERR_OK;
+}
+

 static void close_conn(struct tcp_pcb *pcb, struct rfb_state *state) {
        tcp_arg(pcb, NULL);
        tcp_sent(pcb, NULL);
 static void close_conn(struct tcp_pcb *pcb, struct rfb_state *state) {
        tcp_arg(pcb, NULL);
        tcp_sent(pcb, NULL);


@@ -388,13 +497,13 @@ static enum fsm_result recv_fsm(struct tcp_pcb *pcb, struct rfb_state *state) {
                                (struct text_event_pkt *)state->data;
 
                        if (state->writepos < sizeof(struct text_event_pkt)
                                (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)
                                return NEEDMORE;
 
                        /* XXX stub */
 
                        state->readpos += sizeof(struct text_event_pkt)

-                                         + pkt->length;
+                                         + pkt->length;

                        return OK;
 
                default:
                        return OK;
 
                default:


@@ -407,7 +516,7 @@ static enum fsm_result recv_fsm(struct tcp_pcb *pcb, struct rfb_state *state) {
 }
 
 static err_t rfb_recv(void *arg, struct tcp_pcb *pcb,
 }
 
 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) 
        struct rfb_state *state = arg;
 
        if (state == NULL) 


@@ -460,8 +569,8 @@ static err_t rfb_recv(void *arg, struct tcp_pcb *pcb,
                                return ERR_OK;
                        } else {
                                memmove(state->data,
                                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:
                        }
                        break;
                case FAIL:


@@ -486,6 +595,7 @@ static err_t rfb_accept(void *arg, struct tcp_pcb *pcb, err_t err) {
        state->writepos = 0;
        state->update_requested = 0;
        state->send_state = SST_IDLE;
        state->writepos = 0;
        state->update_requested = 0;
        state->send_state = SST_IDLE;

+       memset(state->checksums, 0, sizeof(state->checksums));

 
        /* XXX: update_server_info() should be called from the 64ms timer, and deal
         * with screen resizes appropriately. */
 
        /* XXX: update_server_info() should be called from the 64ms timer, and deal
         * with screen resizes appropriately. */


@@ -500,9 +610,9 @@ static err_t rfb_accept(void *arg, struct tcp_pcb *pcb, err_t err) {
        tcp_arg(pcb, state);
        tcp_recv(pcb, rfb_recv);
        tcp_sent(pcb, rfb_sent);
        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_err(pcb, rfb_err);

-       tcp_poll(pcb, rfb_poll, 2);

 */
        tcp_write(pcb, "RFB 003.008\n", 12, 0);
        tcp_output(pcb);
 */
        tcp_write(pcb, "RFB 003.008\n", 12, 0);
        tcp_output(pcb);