packet.c File Reference

#include <string.h>
#include <stdlib.h>
#include <malloc.h>
#include <packet.h>

Include dependency graph for packet.c:

Go to the source code of this file.

Macros
#define	SPR_BEGIN   0x70000000

Functions
packet_t *	packet_init (int qwords, int type)
void	packet_free (packet_t *packet)
void	packet_reset (packet_t *packet)

Macro Definition Documentation

SPR_BEGIN

#define SPR_BEGIN   0x70000000

Definition at line 6 of file packet.c.

Function Documentation

packet_free()

void packet_free

(

packet_t *

packet

)

Free the space allocated by packet.

Definition at line 63 of file packet.c.

{
 
        // Free the allocated data buffer.
        if (packet->type == PACKET_SPR)
        {
 
                packet->data = NULL;
 
        }
        else
        {
                if (packet->type == PACKET_UCAB)
                {
 
                        packet->data = (qword_t *)((u32)packet->data ^ 0x30000000);
 
                }
 
                free(packet->data);
        }
 
        free(packet);
 
}

References packet_t::data, NULL, packet, PACKET_SPR, PACKET_UCAB, and packet_t::type.

Referenced by draw_init_env(), init_drawing_environment(), init_texture(), load_texture(), main(), render(), and setup_texture().

packet_init()

packet_t* packet_init	(	int	qwords,
		int	type
	)

Allocate a new packet for use, size in quadwords.

Definition at line 8 of file packet.c.

{
 
        int byte_size = 0;
        packet_t *packet = (packet_t*)calloc(1,sizeof(packet_t));
 
        if (packet == NULL)
        {
 
                return NULL;
 
        }
 
        if (type == PACKET_SPR)
        {
 
                packet->data = (qword_t *)SPR_BEGIN;
                packet->qwc = 0x1000;
 
        }
        else
        {
                // Size of qwords in bytes.
                byte_size = qwords << 4;
 
                // Allocate the data area in bytes aligned to cache line.
                if ((packet->data = memalign(64, byte_size)) == NULL)
                {
                        free(packet);
                        return NULL;
 
                }
        }
 
        // Set the pointer attribute to ucab space.
        if (type == PACKET_UCAB)
        {
 
                packet->data = (qword_t *)((u32)packet->data | 0x30000000);
 
        }
 
        // Clear the packet area.
        memset(packet->data, 0, byte_size);
 
        // Set the packet counts
        packet->qwc = 0;
        packet->qwords = qwords;
        packet->type = type;
 
        // End function.
        return packet;
 
}

References packet_t::data, NULL, packet, PACKET_SPR, PACKET_UCAB, packet_t::qwc, packet_t::qwords, SPR_BEGIN, and packet_t::type.

Referenced by draw_init_env(), init_drawing_environment(), init_texture(), InitCB(), load_texture(), main(), render(), run_demo(), and setup_texture().

packet_reset()

void packet_reset

(

packet_t *

packet

)

Reset the packet quadword counter and zero out data.

Definition at line 89 of file packet.c.

{
 
        // Reset the quadword counter.
        packet->qwc = 0;
 
        if (packet->type == PACKET_SPR)
        {
 
                packet->data = (qword_t *)SPR_BEGIN;
                return;
 
        }
 
        // Zero out the data
        memset(packet->data, 0, packet->qwords << 4);
 
}

References packet_t::data, packet, PACKET_SPR, packet_t::qwc, packet_t::qwords, SPR_BEGIN, and packet_t::type.