typedef struct FormatContext {
const AVClass *class;
char *pix_fmts;
+
/**
- * List of flags telling if a given image format has been listed
- * as argument to the filter.
+ * pix_fmts parsed into AVPixelFormats and terminated with
+ * AV_PIX_FMT_NONE
*/
- int listed_pix_fmt_flags[AV_PIX_FMT_NB];
+ enum AVPixelFormat *formats;
} FormatContext;
-#define AV_PIX_FMT_NAME_MAXSIZE 32
+static av_cold void uninit(AVFilterContext *ctx)
+{
+ FormatContext *s = ctx->priv;
+ av_freep(&s->formats);
+}
static av_cold int init(AVFilterContext *ctx)
{
FormatContext *s = ctx->priv;
- const char *cur, *sep;
- char pix_fmt_name[AV_PIX_FMT_NAME_MAXSIZE];
- int pix_fmt_name_len, ret;
- enum AVPixelFormat pix_fmt;
+ char *cur, *sep;
+ int nb_formats = 1;
+ int i;
+ int ret;
+
+ /* count the formats */
+ cur = s->pix_fmts;
+ while ((cur = strchr(cur, '|'))) {
+ nb_formats++;
+ if (*cur)
+ cur++;
+ }
+
+ s->formats = av_malloc_array(nb_formats + 1, sizeof(*s->formats));
+ if (!s->formats)
+ return AVERROR(ENOMEM);
if (!s->pix_fmts)
return AVERROR(EINVAL);
/* parse the list of formats */
- for (cur = s->pix_fmts; cur; cur = sep ? sep + 1 : NULL) {
- if (!(sep = strchr(cur, '|')))
- pix_fmt_name_len = strlen(cur);
- else
- pix_fmt_name_len = sep - cur;
- if (pix_fmt_name_len >= AV_PIX_FMT_NAME_MAXSIZE) {
- av_log(ctx, AV_LOG_ERROR, "Format name too long\n");
- return -1;
- }
-
- memcpy(pix_fmt_name, cur, pix_fmt_name_len);
- pix_fmt_name[pix_fmt_name_len] = 0;
+ cur = s->pix_fmts;
+ for (i = 0; i < nb_formats; i++) {
+ sep = strchr(cur, '|');
+ if (sep)
+ *sep++ = 0;
- if ((ret = ff_parse_pixel_format(&pix_fmt, pix_fmt_name, ctx)) < 0)
+ if ((ret = ff_parse_pixel_format(&s->formats[i], cur, ctx)) < 0)
return ret;
- s->listed_pix_fmt_flags[pix_fmt] = 1;
+ cur = sep;
+ }
+ s->formats[nb_formats] = AV_PIX_FMT_NONE;
+
+ if (!strcmp(ctx->filter->name, "noformat")) {
+ const AVPixFmtDescriptor *desc = NULL;
+ enum AVPixelFormat *formats_allowed;
+ int nb_formats_lavu = 0, nb_formats_allowed = 0;
+
+ /* count the formats known to lavu */
+ while ((desc = av_pix_fmt_desc_next(desc)))
+ nb_formats_lavu++;
+
+ formats_allowed = av_malloc_array(nb_formats_lavu + 1, sizeof(*formats_allowed));
+ if (!formats_allowed)
+ return AVERROR(ENOMEM);
+
+ /* for each format known to lavu, check if it's in the list of
+ * forbidden formats */
+ while ((desc = av_pix_fmt_desc_next(desc))) {
+ enum AVPixelFormat pix_fmt = av_pix_fmt_desc_get_id(desc);
+
+ for (i = 0; i < nb_formats; i++) {
+ if (s->formats[i] == pix_fmt)
+ break;
+ }
+ if (i < nb_formats)
+ continue;
+
+ formats_allowed[nb_formats_allowed++] = pix_fmt;
+ }
+ formats_allowed[nb_formats_allowed] = AV_PIX_FMT_NONE;
+ av_freep(&s->formats);
+ s->formats = formats_allowed;
}
return 0;
}
-static AVFilterFormats *make_format_list(FormatContext *s, int flag)
+static int query_formats(AVFilterContext *ctx)
{
- AVFilterFormats *formats = NULL;
- enum AVPixelFormat pix_fmt;
-
- for (pix_fmt = 0; pix_fmt < AV_PIX_FMT_NB; pix_fmt++)
- if (s->listed_pix_fmt_flags[pix_fmt] == flag) {
- int ret = ff_add_format(&formats, pix_fmt);
- if (ret < 0) {
- ff_formats_unref(&formats);
- return NULL;
- }
- }
+ FormatContext *s = ctx->priv;
+ AVFilterFormats *formats = ff_make_format_list(s->formats);
+
+ if (!formats)
+ return AVERROR(ENOMEM);
- return formats;
+ ff_set_common_formats(ctx, formats);
+ return 0;
}
+
#define OFFSET(x) offsetof(FormatContext, x)
static const AVOption options[] = {
{ "pix_fmts", "A '|'-separated list of pixel formats", OFFSET(pix_fmts), AV_OPT_TYPE_STRING, .flags = AV_OPT_FLAG_VIDEO_PARAM },
};
#if CONFIG_FORMAT_FILTER
-static int query_formats_format(AVFilterContext *ctx)
-{
- ff_set_common_formats(ctx, make_format_list(ctx->priv, 1));
- return 0;
-}
#define format_options options
AVFILTER_DEFINE_CLASS(format);
AVFilter ff_vf_format = {
.name = "format",
.description = NULL_IF_CONFIG_SMALL("Convert the input video to one of the specified pixel formats."),
+
.init = init,
- .query_formats = query_formats_format,
+ .uninit = uninit,
+
+ .query_formats = query_formats,
+
.priv_size = sizeof(FormatContext),
.priv_class = &format_class,
+
.inputs = avfilter_vf_format_inputs,
.outputs = avfilter_vf_format_outputs,
};
#endif /* CONFIG_FORMAT_FILTER */
#if CONFIG_NOFORMAT_FILTER
-static int query_formats_noformat(AVFilterContext *ctx)
-{
- ff_set_common_formats(ctx, make_format_list(ctx->priv, 0));
- return 0;
-}
#define noformat_options options
AVFILTER_DEFINE_CLASS(noformat);
AVFilter ff_vf_noformat = {
.name = "noformat",
.description = NULL_IF_CONFIG_SMALL("Force libavfilter not to use any of the specified pixel formats for the input to the next filter."),
+
.init = init,
- .query_formats = query_formats_noformat,
+ .uninit = uninit,
+
+ .query_formats = query_formats,
+
.priv_size = sizeof(FormatContext),
.priv_class = &noformat_class,
+
.inputs = avfilter_vf_noformat_inputs,
.outputs = avfilter_vf_noformat_outputs,
};
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