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mitsu70x: Rework printjob parsing so that it can figure out job length

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from the headers.
This commit is contained in:
Solomon Peachy 2014-01-17 22:50:29 -05:00
parent dfbac582bc
commit a7316668ff
1 changed files with 55 additions and 15 deletions
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70
backend_mitsu70x.c
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@ -103,22 +103,45 @@ static void mitsu70x_teardown(void *vctx) {
/* Max job size is 6x9+lamination, equalling ~38MB */
#define MAX_PRINTJOB_LEN (1024*1024*40)
struct mitsu70x_hdr {
uint32_t cmd;
uint8_t zero0[12];
uint16_t cols;
uint16_t rows;
uint16_t lamcols;
uint16_t lamrows;
uint8_t superfine;
uint8_t zero1[7];
uint8_t deck;
uint8_t zero2[7];
uint8_t zero3;
uint8_t laminate;
uint8_t zero4[6];
uint8_t zero5[512-48];
};
static int mitsu70x_read_parse(void *vctx, int data_fd) {
struct mitsu70x_ctx *ctx = vctx;
uint8_t hdr[16];
int i;
uint8_t hdr[1024];
int i, remain;
struct mitsu70x_hdr *mhdr = (struct mitsu70x_hdr*)(hdr + 512);
if (!ctx)
return 1;
/* Read in initial header to sanity check */
i = read(data_fd, hdr, sizeof(hdr));
if (i < 0 || i != sizeof(hdr)) {
ERROR("Read failed (%d/%d/%d)\n",
i, 0, (int)sizeof(hdr));
perror("ERROR: Read failed");
return i;
if (ctx->databuf)
free(ctx->databuf);
/* Read in initial header */
remain = sizeof(hdr);
while (remain > 0) {
i = read(data_fd, hdr + sizeof(hdr) - remain, remain);
if (i < 0)
return i;
remain -= i;
}
/* Sanity check */
if (hdr[0] != 0x1b ||
hdr[1] != 0x45 ||
hdr[2] != 0x57 ||
@ -127,16 +150,32 @@ static int mitsu70x_read_parse(void *vctx, int data_fd) {
return(1);
}
ctx->databuf = malloc(MAX_PRINTJOB_LEN);
/* Work out printjob size */
remain = be16_to_cpu(mhdr->rows) * be16_to_cpu(mhdr->cols) * 2;
remain = (remain + 511) / 512 * 512; /* Round to nearest 512 bytes. */
remain *= 3; /* One for each plane */
if (mhdr->laminate) {
i = be16_to_cpu(mhdr->lamrows) * be16_to_cpu(mhdr->lamcols) * 2;
i = (i + 511) / 512 * 512; /* Round to nearest 512 bytes. */
remain += i;
}
ctx->databuf = malloc(remain + sizeof(hdr));
if (!ctx->databuf) {
ERROR("Memory allocation failure!\n");
return 2;
}
/* Just read teh whole thing in */
while((i = read(data_fd, ctx->databuf + ctx->datalen, 4096)) > 0) {
ctx->datalen += i;
}
memcpy(ctx->databuf, &hdr, sizeof(hdr));
ctx->datalen += sizeof(hdr);
/* Read in the spool data */
while(remain) {
i = read(data_fd, ctx->databuf + ctx->datalen - remain, remain);
if (i < 0)
return i;
remain -= i;
}
return 0;
}
@ -352,8 +391,9 @@ static int mitsu70x_cmdline_arg(void *vctx, int run, char *arg1, char *arg2)
/* Exported */
struct dyesub_backend mitsu70x_backend = {
.name = "Mitsubishi CP-D70/D707",
.version = "0.08",
.version = "0.09",
.uri_prefix = "mitsu70x",
.multipage_capable = 1,
.cmdline_usage = mitsu70x_cmdline,
.cmdline_arg = mitsu70x_cmdline_arg,
.init = mitsu70x_init,