avcodec/raw: add avpriv_get_raw_pix_fmt_tags()

Used to expose ff_raw_pix_fmt_tags[] to other libav* libraries
Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/raw.c

@@ -224,6 +224,11 @@ const PixelFormatTag ff_raw_pix_fmt_tags[] = {
     { AV_PIX_FMT_NONE, 0 },
 };
 
+const struct PixelFormatTag *avpriv_get_raw_pix_fmt_tags(void)
+{
+    return ff_raw_pix_fmt_tags;
+}
+
 unsigned int avcodec_pix_fmt_to_codec_tag(enum AVPixelFormat fmt)
 {
     const PixelFormatTag *tags = ff_raw_pix_fmt_tags;

libavcodec/raw.h

@@ -35,7 +35,13 @@ typedef struct PixelFormatTag {
     unsigned int fourcc;
 } PixelFormatTag;
 
+#if LIBAVCODEC_VERSION_MAJOR < 56
 extern av_export const PixelFormatTag ff_raw_pix_fmt_tags[];
+#else
+extern const PixelFormatTag ff_raw_pix_fmt_tags[]; // exposed through avpriv_get_raw_pix_fmt_tags()
+#endif
+
+const struct PixelFormatTag *avpriv_get_raw_pix_fmt_tags(void);
 
 enum AVPixelFormat avpriv_find_pix_fmt(const PixelFormatTag *tags, unsigned int fourcc);
 

libavdevice/dshow.c

@@ -92,7 +92,7 @@ static enum AVPixelFormat dshow_pixfmt(DWORD biCompression, WORD biBitCount)
                 return AV_PIX_FMT_0RGB32;
         }
     }
-    return avpriv_find_pix_fmt(ff_raw_pix_fmt_tags, biCompression); // all others
+    return avpriv_find_pix_fmt(avpriv_get_raw_pix_fmt_tags(), biCompression); // all others
 }
 
 static int

libavformat/utils.c

@@ -3275,7 +3275,7 @@ int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
         if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
             if (st->codec->codec_id == AV_CODEC_ID_RAWVIDEO && !st->codec->codec_tag && !st->codec->bits_per_coded_sample) {
                 uint32_t tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
-                if (avpriv_find_pix_fmt(ff_raw_pix_fmt_tags, tag) == st->codec->pix_fmt)
+                if (avpriv_find_pix_fmt(avpriv_get_raw_pix_fmt_tags(), tag) == st->codec->pix_fmt)
                     st->codec->codec_tag= tag;
             }