[FFmpeg-devel] [PATCH 1/6] avformat/argo_asf: don't check or probe file version

[Zane van Iperen]

All files I've seen are identical, irregardless of version.
Until shown otherwise, assume unknown ones are too.

Signed-off-by: Zane van Iperen <zane at zanevaniperen.com>
---
 libavformat/argo_asf.c | 37 +++++++------------------------------
 1 file changed, 7 insertions(+), 30 deletions(-)

diff --git a/libavformat/argo_asf.c b/libavformat/argo_asf.c
index 671b7482f9..beec46a0d4 100644
--- a/libavformat/argo_asf.c
+++ b/libavformat/argo_asf.c
@@ -29,6 +29,12 @@
 #define ASF_CHUNK_HEADER_SIZE   20
 #define ASF_SAMPLE_COUNT        32
 
+/*
+ * Known versions:
+ * 1.1: The sample files in /game-formats/brender/part2.zip
+ * 1.2: Croc! Legend of the Gobbos
+ * 2.1: Croc 2
+ */
 typedef struct ArgoASFFileHeader {
     uint32_t    magic;          /*< Magic Number, {'A', 'S', 'F', '\0'} */
     uint16_t    version_major;  /*< File Major Version. */
@@ -85,33 +91,11 @@ static void argo_asf_parse_chunk_header(ArgoASFChunkHeader *hdr, const uint8_t *
     hdr->flags          = AV_RL32(buf + 16);
 }
 
-/*
- * Known versions:
- * 1.1: The sample files in /game-formats/brender/part2.zip
- * 1.2: Croc! Legend of the Gobbos
- * 2.1: Croc 2
- */
-static int argo_asf_is_known_version(const ArgoASFFileHeader *hdr)
-{
-    return (hdr->version_major == 1 && hdr->version_minor == 1) ||
-           (hdr->version_major == 1 && hdr->version_minor == 2) ||
-           (hdr->version_major == 2 && hdr->version_minor == 1);
-}
-
 static int argo_asf_probe(const AVProbeData *p)
 {
-    ArgoASFFileHeader hdr;
-
-    av_assert0(AVPROBE_PADDING_SIZE >= ASF_FILE_HEADER_SIZE);
-
-    argo_asf_parse_file_header(&hdr, p->buf);
-
-    if (hdr.magic != ASF_TAG)
+    if (AV_RL32(p->buf) != ASF_TAG)
         return 0;
 
-    if (!argo_asf_is_known_version(&hdr))
-        return AVPROBE_SCORE_EXTENSION / 2;
-
     return AVPROBE_SCORE_EXTENSION + 1;
 }
 
@@ -133,13 +117,6 @@ static int argo_asf_read_header(AVFormatContext *s)
 
     argo_asf_parse_file_header(&asf->fhdr, buf);
 
-    if (!argo_asf_is_known_version(&asf->fhdr)) {
-        avpriv_request_sample(s, "Version %hu.%hu",
-            asf->fhdr.version_major, asf->fhdr.version_minor
-        );
-        return AVERROR_PATCHWELCOME;
-    }
-
     if (asf->fhdr.num_chunks == 0) {
         return AVERROR_INVALIDDATA;
     } else if (asf->fhdr.num_chunks > 1) {
-- 
2.25.1