+static int parse_psfile(AVFilterContext *ctx, const char *fname)
+{
+ CurvesContext *curves = ctx->priv;
+ uint8_t *buf;
+ size_t size;
+ int i, ret, av_unused(version), nb_curves;
+ AVBPrint ptstr;
+ static const int comp_ids[] = {3, 0, 1, 2};
+
+ av_bprint_init(&ptstr, 0, AV_BPRINT_SIZE_AUTOMATIC);
+
+ ret = av_file_map(fname, &buf, &size, 0, NULL);
+ if (ret < 0)
+ return ret;
+
+#define READ16(dst) do { \
+ if (size < 2) \
+ return AVERROR_INVALIDDATA; \
+ dst = AV_RB16(buf); \
+ buf += 2; \
+ size -= 2; \
+} while (0)
+
+ READ16(version);
+ READ16(nb_curves);
+ for (i = 0; i < FFMIN(nb_curves, FF_ARRAY_ELEMS(comp_ids)); i++) {
+ int nb_points, n;
+ av_bprint_clear(&ptstr);
+ READ16(nb_points);
+ for (n = 0; n < nb_points; n++) {
+ int y, x;
+ READ16(y);
+ READ16(x);
+ av_bprintf(&ptstr, "%f/%f ", x / 255., y / 255.);
+ }
+ if (*ptstr.str) {
+ char **pts = &curves->comp_points_str[comp_ids[i]];
+ if (!*pts) {
+ *pts = av_strdup(ptstr.str);
+ av_log(ctx, AV_LOG_DEBUG, "curves %d (intid=%d) [%d points]: [%s]\n",
+ i, comp_ids[i], nb_points, *pts);
+ if (!*pts) {
+ ret = AVERROR(ENOMEM);
+ goto end;
+ }
+ }
+ }
+ }
+end:
+ av_bprint_finalize(&ptstr, NULL);
+ av_file_unmap(buf, size);
+ return ret;
+}
+