sizebuf.c File Reference

#include "shared/shared.h"
#include "common/protocol.h"
#include "common/sizebuf.h"

Go to the source code of this file.

Functions
void	SZ_TagInit (sizebuf_t *buf, void *data, size_t size, uint32_t tag)
void	SZ_Init (sizebuf_t *buf, void *data, size_t size)
void	SZ_Clear (sizebuf_t *buf)
void *	SZ_GetSpace (sizebuf_t *buf, size_t len)
void	SZ_WriteByte (sizebuf_t *sb, int c)
void	SZ_WriteShort (sizebuf_t *sb, int c)
void	SZ_WriteLong (sizebuf_t *sb, int c)

Function Documentation

SZ_Clear()

void SZ_Clear

(

sizebuf_t *

buf

)

Definition at line 40 of file sizebuf.c.

{
    buf->cursize = 0;
    buf->readcount = 0;
    buf->bitpos = 0;
    buf->overflowed = qfalse;
}

Referenced by AC_Announce(), AC_Flush(), AC_Write(), CL_Disconnect(), CL_EmitDemoFrame(), CL_EmitDemoSnapshot(), CL_GTV_EmitFrame(), CL_GTV_Resume(), CL_GTV_Transmit(), CL_SendBatchedCmd(), CL_SendDefaultCmd(), CL_WriteDemoMessage(), demo_emit_snapshot(), gtv_forward_cmd(), MVD_BroadcastPrintf(), MVD_ChangeLevel(), mvd_disable(), MVD_Frame(), MVD_StreamedRecord_f(), MVD_UpdateConfigstring(), NetchanNew_Process(), NetchanNew_TransmitNextFragment(), parse_hello(), parse_stream_start(), PF_bprintf(), PF_configstring(), PF_cprintf(), PF_Unicast(), rec_start(), redirect(), resume_streams(), send_hello(), send_stream_start(), SV_BroadcastCommand(), SV_BroadcastPrintf(), SV_ClientAddMessage(), SV_FinalMessage(), SV_Multicast(), SV_MvdEndFrame(), SV_MvdMapChanged(), SV_RunGameFrame(), SV_SendClientMessages(), SV_StuffAll_f(), SZ_GetSpace(), write_datagram_new(), write_datagram_old(), write_level_file(), and write_server_file().

SZ_GetSpace()

void* SZ_GetSpace	(	sizebuf_t *	buf,
		size_t	len
	)

Definition at line 48 of file sizebuf.c.

{
    void    *data;
 
    if (buf->cursize > buf->maxsize) {
        Com_Error(ERR_FATAL,
                  "%s: %#x: already overflowed",
                  __func__, buf->tag);
    }
 
    if (len > buf->maxsize - buf->cursize) {
        if (len > buf->maxsize) {
            Com_Error(ERR_FATAL,
                      "%s: %#x: %"PRIz" is > full buffer size %"PRIz"",
                      __func__, buf->tag, len, buf->maxsize);
        }
 
        if (!buf->allowoverflow) {
            Com_Error(ERR_FATAL,
                      "%s: %#x: overflow without allowoverflow set",
                      __func__, buf->tag);
        }
 
        //Com_DPrintf("%s: %#x: overflow\n", __func__, buf->tag);
        SZ_Clear(buf);
        buf->overflowed = qtrue;
    }
 
    data = buf->data + buf->cursize;
    buf->cursize += len;
    buf->bitpos = buf->cursize << 3;
    return data;
}

Referenced by CL_SendBatchedCmd(), CL_SendDefaultCmd(), MSG_WriteByte(), MSG_WriteChar(), MSG_WriteLong(), MSG_WriteShort(), SV_WriteFrameToClient_Enhanced(), SZ_WriteByte(), SZ_WriteLong(), and SZ_WriteShort().

SZ_Init()

void SZ_Init	(	sizebuf_t *	buf,
		void *	data,
		size_t	size
	)

Definition at line 31 of file sizebuf.c.

{
    memset(buf, 0, sizeof(*buf));
    buf->data = data;
    buf->maxsize = size;
    buf->allowoverflow = qtrue;
    buf->allowunderflow = qtrue;
}

Referenced by CL_GTV_Resume(), CL_ParseZPacket(), CL_Record_f(), CL_Seek_f(), demo_read_message(), demo_skip_map(), FIFO_ReadMessage(), MVD_Seek_f(), NET_GetUdpPackets(), NetchanNew_Setup(), NetchanOld_Setup(), read_binary_file(), read_first_message(), read_next_message(), and SV_MvdInit().

SZ_TagInit()

void SZ_TagInit	(	sizebuf_t *	buf,
		void *	data,
		size_t	size,
		uint32_t	tag
	)

Definition at line 23 of file sizebuf.c.

{
    memset(buf, 0, sizeof(*buf));
    buf->data = data;
    buf->maxsize = size;
    buf->tag = tag;
}

Referenced by MSG_Init(), NetchanNew_Setup(), NetchanNew_Transmit(), NetchanNew_TransmitNextFragment(), and NetchanOld_Transmit().

SZ_WriteByte()

void SZ_WriteByte	(	sizebuf_t *	sb,
		int	c
	)

Definition at line 82 of file sizebuf.c.

{
    byte    *buf;
 
    buf = SZ_GetSpace(sb, 1);
    buf[0] = c;
}

Referenced by CL_GTV_WriteMessage(), NetchanNew_Transmit(), NetchanNew_TransmitNextFragment(), NetchanOld_Transmit(), resume_record(), SV_MvdBroadcastPrint(), SV_MvdConfigstring(), SV_MvdMulticast(), SV_MvdStartSound(), SV_MvdUnicast(), and write_pending_download().

SZ_WriteLong()

void SZ_WriteLong	(	sizebuf_t *	sb,
		int	c
	)

Definition at line 99 of file sizebuf.c.

{
    byte    *buf;
 
    buf = SZ_GetSpace(sb, 4);
    buf[0] = c & 0xff;
    buf[1] = (c >> 8) & 0xff;
    buf[2] = (c >> 16) & 0xff;
    buf[3] = c >> 24;
}

Referenced by NetchanNew_Transmit(), NetchanNew_TransmitNextFragment(), and NetchanOld_Transmit().

SZ_WriteShort()

void SZ_WriteShort	(	sizebuf_t *	sb,
		int	c
	)

Definition at line 90 of file sizebuf.c.

{
    byte    *buf;
 
    buf = SZ_GetSpace(sb, 2);
    buf[0] = c & 0xff;
    buf[1] = c >> 8;
}

Referenced by NetchanNew_TransmitNextFragment(), NetchanOld_Transmit(), resume_record(), SV_MvdConfigstring(), SV_MvdMulticast(), SV_MvdStartSound(), and write_pending_download().