X-Git-Url: http://git.joshuawise.com/netwatch.git/blobdiff_plain/075bbc718253e94387bd857b22c7bedea259651b..cdde55f54a0880bde5694fcdea8e386ada0cd5ce:/net/rfb.c?ds=sidebyside diff --git a/net/rfb.c b/net/rfb.c index ff0f089..5fe1a11 100644 --- a/net/rfb.c +++ b/net/rfb.c @@ -3,6 +3,8 @@ #include #include +#include "../aseg-paging/keyboard.h" + #include "lwip/tcp.h" #include "rfb.h" @@ -16,6 +18,9 @@ #define RFB_BUF_SIZE 64 +#define SCREEN_CHUNKS_X 16 +#define SCREEN_CHUNKS_Y 8 + struct pixel_format { uint8_t bpp; uint8_t depth; @@ -110,8 +115,16 @@ struct rfb_state { SST_SENDING } send_state; - uint32_t update_pos; - uint32_t frame_bytes; + uint32_t checksums[SCREEN_CHUNKS_Y][SCREEN_CHUNKS_X]; + + 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; }; static struct server_init_message server_info; @@ -150,7 +163,9 @@ static void update_server_info() { static void send_fsm(struct tcp_pcb *pcb, struct rfb_state *state) { struct update_header hdr; - int left, sndlength; + int lines_left; + char * lptr; + int totaldim; err_t err; switch (state->send_state) { @@ -164,66 +179,131 @@ static void send_fsm(struct tcp_pcb *pcb, struct rfb_state *state) { break; } - /* potential FALL THROUGH */ + /* 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->chunk_xnum = 0; + state->chunk_ynum = 0; + state->chunk_width = 0; + state->chunk_height = 0; + state->chunk_lindex = 0; state->send_state = SST_SENDING; - /* FALL THROUGH */ + /* FALL THROUGH to SST_SENDING */ case SST_SENDING: while (1) { - unsigned char mbuf[8192 /* XXX magic */]; - - left = state->frame_bytes - state->update_pos; + lines_left = state->chunk_height - state->chunk_lindex; - if (left == 0) { - state->send_state = SST_IDLE; - break; - } - - if (left > 8192) - left = 8192; + if (lines_left == 0) { + outputf("RFB: (%d [%d], %d [%d]), advancing", + state->chunk_xnum, state->chunk_xpos, + state->chunk_ynum, state->chunk_ypos); - if (left > tcp_mss(pcb)) { - sndlength = tcp_mss(pcb); - } else { - sndlength = left; + /* Advance to the next chunk if necessary. If + * state->chunk_height is zero, then we are + * arriving here for the first time from + * SST_NEEDS_UPDATE. */ + + if (state->chunk_height != 0) { + 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->send_state = SST_IDLE; + break; + } + + outputf("RFB send: sending 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); + } + + /* Send a header */ + hdr.msgtype = 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); + state->chunk_lindex = 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); + + /* Crap. Reset chunk_height to 0 so that next time around, + * we'll recalculate this chunk (not advance) and try to + * send the header again. + */ + state->chunk_height = 0; + } } - - memcpy(mbuf, fb->fbaddr + state->update_pos, sndlength); /* It's OK if it becomes smaller later. */ do { - err = tcp_write(pcb, mbuf, sndlength, TCP_WRITE_FLAG_COPY /* This is my memory on the stack, thank you very much. */); - if (err == ERR_MEM) { - outputf("RFB: ERR_MEM sending %d", sndlength); - sndlength /= 2; + outputf("RFB: (%d [%d], %d [%d]), %d x %d, line %d", + state->chunk_xnum, state->chunk_xpos, + state->chunk_ynum, state->chunk_ypos, + state->chunk_width, state->chunk_height, + state->chunk_lindex); + + 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; } - } while (err == ERR_MEM && sndlength > 1); - if (err == ERR_OK) { - outputf("RFB: attempting send %d", sndlength); - } else { - outputf("RFB: send error %d", err); - break; - } + } while (err == ERR_OK && state->chunk_lindex < state->chunk_height); - state->update_pos += sndlength; + if (err != ERR_OK) { + if (err != ERR_MEM) + outputf("RFB: send error %d", err); + outputf("RFB: that's all for now"); + break; + } + if (tcp_sndbuf(pcb) == 0) { break; } @@ -233,9 +313,7 @@ static void send_fsm(struct tcp_pcb *pcb, struct rfb_state *state) { } 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) { @@ -353,7 +431,6 @@ static enum fsm_result recv_fsm(struct tcp_pcb *pcb, struct rfb_state *state) { for (i = 0; i < ntohs(req->num); i++) { outputf("RFB: Encoding: %d", ntohl(req->encodings[i])); /* XXX ... */ - } state->readpos += pktsize; @@ -374,9 +451,11 @@ static enum fsm_result recv_fsm(struct tcp_pcb *pcb, struct rfb_state *state) { 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; @@ -460,7 +539,7 @@ static err_t rfb_recv(void *arg, struct tcp_pcb *pcb, case OK: outputf("RFB FSM: ok"); - /* Might as well send now... */ + /* Kick off a send. */ if (state->send_state == SST_IDLE && state->update_requested) { send_fsm(pcb, state);