* massive structural rewrite. Split off code into several new modules (render, render_png, render_local) and updated new modules to use them.
* the beginnings of render_multi, really not done yet
committer: Tero Marttila <terom@fixme.fi>
#include <stdlib.h>
#include <string.h>
#include "render_internal.h"
#include "render.h"
int render_init (struct render *ctx, int mode) {
memset(ctx, 0, sizeof(*ctx));
return render_set_mode(ctx, mode);
}
struct render *render_alloc () {
struct render *ctx;
if (!(ctx = calloc(1, sizeof(struct render))))
return NULL;
return ctx;
}
int render_set_mode (struct render *ctx, int mode) {
if (mode != RENDER_RAW && mode != RENDER_PNG)
return -1;
ctx->mode = mode;
return 0;
}
int render_set_size (struct render *ctx, u_int32_t img_w, u_int32_t img_h) {
if (img_w == 0 || img_h == 0)
return -1;
ctx->img_w = img_w;
ctx->img_h = img_h;
return 0;
}
int render_get_size (struct render *ctx, u_int32_t *img_w, u_int32_t *img_h) {
*img_w = ctx->img_w;
*img_h = ctx->img_h;
return 0;
}
int render_region_full (struct render *ctx) {
return render_region_raw(ctx, REGION_X1, REGION_Y1, REGION_X2, REGION_Y2);
}
int render_region_raw (struct render *ctx, double x1, double y1, double x2, double y2) {
if ((x1 >= x2) || (y1 >= y2))
return -1;
ctx->x1 = x1;
ctx->y1 = y1;
ctx->x2 = x2;
ctx->y2 = y2;
return 0;
}
int render_io_custom (struct render *ctx, render_ctx_write_cb write_fn, render_ctx_flush_cb flush_fn, void *arg) {
if (!write_fn)
return -1;
ctx->io_write_fn = write_fn;
ctx->io_flush_fn = flush_fn;
ctx->cb_arg = arg;
return 0;
}
int render_io_stream (struct render *ctx, FILE *fh) {
if (!fh)
return -1;
ctx->io_stream = fh;
return 0;
}
int render_local_mem (struct render *ctx, unsigned char **rowbuf_addr, render_ctx_row_cb row_fn, void *arg) {
ctx->local_rowbuf_addr = rowbuf_addr;
ctx->local_row_fn = row_fn;
ctx->cb_arg = arg;
return 0;
}