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lavfi/frei0r: extend load_path() to support arbitrarily long paths

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This commit is contained in:
Stefano Sabatini 2012-11-16 10:45:25 +01:00
parent d6c184880e
commit 6c7ae49330
1 changed files with 26 additions and 11 deletions
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37
libavfilter/vf_frei0r.c
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@ -204,13 +204,15 @@ static int set_params(AVFilterContext *ctx, const char *params)
return 0;
}
static void *load_path(AVFilterContext *ctx, const char *prefix, const char *name)
static int load_path(AVFilterContext *ctx, void **handle_ptr, const char *prefix, const char *name)
{
char path[1024];
snprintf(path, sizeof(path), "%s%s%s", prefix, name, SLIBSUF);
char *path = av_asprintf("%s%s%s", prefix, name, SLIBSUF);
if (!path)
return AVERROR(ENOMEM);
av_log(ctx, AV_LOG_DEBUG, "Looking for frei0r effect in '%s'\n", path);
return dlopen(path, RTLD_NOW|RTLD_LOCAL);
*handle_ptr = dlopen(path, RTLD_NOW|RTLD_LOCAL);
av_free(path);
return 0;
}
static av_cold int frei0r_init(AVFilterContext *ctx,
@ -221,6 +223,7 @@ static av_cold int frei0r_init(AVFilterContext *ctx,
f0r_get_plugin_info_f f0r_get_plugin_info;
f0r_plugin_info_t *pi;
char *path;
int ret = 0;
/* see: http://frei0r.dyne.org/codedoc/html/group__pluglocations.html */
if ((path = av_strdup(getenv("FREI0R_PATH")))) {
@ -237,8 +240,12 @@ static av_cold int frei0r_init(AVFilterContext *ctx,
av_free(path);
return AVERROR(ENOMEM);
}
frei0r->dl_handle = load_path(ctx, p1, dl_name);
ret = load_path(ctx, &frei0r->dl_handle, p1, dl_name);
av_free(p1);
if (ret < 0) {
av_free(path);
return ret;
}
if (frei0r->dl_handle)
break;
}
@ -248,13 +255,21 @@ static av_cold int frei0r_init(AVFilterContext *ctx,
char *prefix = av_asprintf("%s/.frei0r-1/lib/", path);
if (!prefix)
return AVERROR(ENOMEM);
frei0r->dl_handle = load_path(ctx, prefix, dl_name);
ret = load_path(ctx, &frei0r->dl_handle, prefix, dl_name);
av_free(prefix);
if (ret < 0)
return ret;
}
if (!frei0r->dl_handle) {
ret = load_path(ctx, &frei0r->dl_handle, "/usr/local/lib/frei0r-1/", dl_name);
if (ret < 0)
return ret;
}
if (!frei0r->dl_handle) {
ret = load_path(ctx, &frei0r->dl_handle, "/usr/lib/frei0r-1/", dl_name);
if (ret < 0)
return ret;
}
if (!frei0r->dl_handle)
frei0r->dl_handle = load_path(ctx, "/usr/local/lib/frei0r-1/", dl_name);
if (!frei0r->dl_handle)
frei0r->dl_handle = load_path(ctx, "/usr/lib/frei0r-1/", dl_name);
if (!frei0r->dl_handle) {
av_log(ctx, AV_LOG_ERROR, "Could not find module '%s'\n", dl_name);
return AVERROR(EINVAL);