87 lines
1.5 KiB
C
87 lines
1.5 KiB
C
/*
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data source for libisoburn.
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Copyright 2007 Vreixo Formoso Lopes <metalpain2002@yahoo.es>
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*/
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#include <assert.h>
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#include <stdlib.h>
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#include "isoburn.h"
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#include "../libisofs/libisofs.h"
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#include "../libburn/libburn.h"
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struct disc_data_src {
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struct burn_drive *d;
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int nblocks;
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};
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static int
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ds_read_block(struct data_source *src, int lba, unsigned char *buffer)
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{
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int ret;
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struct disc_data_src *data;
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off_t count;
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assert(src && buffer);
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data = (struct disc_data_src*)src->data;
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/* if (lba >= data->nblocks)
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* return BLOCK_OUT_OF_FILE;
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*/
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ret = burn_read_data(data->d, (off_t) lba * (off_t) 2048, buffer, 2048, &count, 0);
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if (ret <= 0 )
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return -1; //error
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return 0;
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}
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static int
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ds_get_size(struct data_source *src)
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{
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struct disc_data_src *data;
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assert(src);
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data = (struct disc_data_src*)src->data;
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return data->nblocks;
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}
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static void
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ds_free_data(struct data_source *src)
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{
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free(src->data);
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}
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static struct data_source *
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isoburn_data_source_new(struct burn_drive *d)
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{
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struct disc_data_src *data;
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struct data_source *ret;
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assert(d);
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data = malloc(sizeof(struct disc_data_src));
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if (!data)
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return NULL;
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data->d = d;
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//TODO should be filled with the size of disc (or track?)
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data->nblocks = 0;
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ret = malloc(sizeof(struct data_source));
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if (!ret) {
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free(data);
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return NULL;
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}
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ret->refcount = 1;
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ret->read_block = ds_read_block;
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ret->get_size = ds_get_size;
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ret->free_data = ds_free_data;
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ret->data = data;
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return ret;
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}
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