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Periodically refresh the screen if bandwidth allows

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This commit is contained in:
simon.kagstrom 2009-03-28 12:37:06 +00:00
parent 61108c59a0
commit bd757f9479
2 changed files with 23 additions and 5 deletions
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22
Src/Network.cpp
View File

@ -67,6 +67,8 @@ Network::Network(const char *remote_host, int port, bool is_master)
this->diff_buf = (Uint8*)malloc(DIFF_SIZE);
assert(this->raw_buf && this->rle_buf && this->diff_buf);
/* Go from lower right to upper left */
this->refresh_square = N_SQUARES_W * N_SQUARES_H - 1;
this->square_updated = (Uint32*)malloc( N_SQUARES_W * N_SQUARES_H * sizeof(Uint32));
assert(this->square_updated);
memset(this->square_updated, 0, N_SQUARES_W * N_SQUARES_H * sizeof(Uint32));
@ -266,13 +268,24 @@ void Network::EncodeDisplay(Uint8 *master, Uint8 *remote)
Uint8 *p_master = &master[ SQUARE_TO_Y(sq) * DISPLAY_X + SQUARE_TO_X(sq) ];
Uint8 *p_remote = &remote[ SQUARE_TO_Y(sq) * DISPLAY_X + SQUARE_TO_X(sq) ];
if (this->CompareSquare(p_master, p_remote) == false)
/* Refresh periodically or if the squares differ */
if ( (this->refresh_square == sq && this->kbps < this->target_kbps * 0.7) ||
this->CompareSquare(p_master, p_remote) == false)
{
NetworkUpdate *dst = (NetworkUpdate *)this->cur_ud;
/* Updated, encode this */
this->EncodeDisplaySquare(dst, master, remote, sq);
this->EncodeDisplaySquare(dst, master, remote, sq,
this->refresh_square == sq);
this->AddNetworkUpdate(dst);
/* This has been refreshed, move to the next one */
if (this->refresh_square == sq)
{
this->refresh_square--;
if (this->refresh_square < 0)
this->refresh_square = N_SQUARES_H * N_SQUARES_W - 1;
}
}
else
this->square_updated[sq] = 0;
@ -282,7 +295,8 @@ void Network::EncodeDisplay(Uint8 *master, Uint8 *remote)
size_t Network::EncodeDisplaySquare(struct NetworkUpdate *dst,
Uint8 *screen, Uint8 *remote, int square)
Uint8 *screen, Uint8 *remote, int square,
bool use_diff)
{
struct NetworkUpdateDisplay *dp = (struct NetworkUpdateDisplay *)dst->data;
const int x_start = SQUARE_TO_X(square);
@ -343,7 +357,7 @@ size_t Network::EncodeDisplaySquare(struct NetworkUpdate *dst,
}
out = RAW_SIZE;
if (diff_sz < rle_sz && diff_sz < RAW_SIZE)
if (use_diff && (diff_sz < rle_sz && diff_sz < RAW_SIZE))
{
memcpy(dp->data, this->diff_buf, diff_sz);
type = DISPLAY_UPDATE_DIFF;

6
Src/Network.h
View File

@ -206,7 +206,8 @@ protected:
* @return the size of the encoded message
*/
size_t EncodeDisplaySquare(struct NetworkUpdate *dst,
Uint8 *screen, Uint8 *remote, int square);
Uint8 *screen, Uint8 *remote, int square,
bool use_diff = true);
/**
* Encode the @a buf sound buffer into @a dst
@ -318,6 +319,9 @@ protected:
int target_kbps;
int kbps;
/* The current square to refresh */
int refresh_square;
Uint8 *screen;
int joystick_port;
bool is_master; /* Some peers are more equal than others */