avformat/wav: Deduplicate codec tags lists

Also saves relocations.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>

libavformat/riff.c

@@ -596,6 +596,10 @@ const AVCodecTag *const ff_riff_codec_tags_list[] = {
 };
 #endif
 
+#if CONFIG_WAV_DEMUXER || CONFIG_WAV_MUXER || CONFIG_W64_DEMUXER || CONFIG_W64_MUXER
+const AVCodecTag *const ff_wav_codec_tags_list[] = { ff_codec_wav_tags, NULL };
+#endif
+
 const AVMetadataConv ff_riff_info_conv[] = {
     { "IART", "artist"     },
     { "ICMT", "comment"    },

libavformat/riff.h

@@ -74,6 +74,8 @@ extern const AVCodecTag ff_codec_bmp_tags[]; // exposed through avformat_get_rif
 extern const AVCodecTag ff_codec_wav_tags[];
 /* The following list contains both ff_codec_bmp_tags and ff_codec_wav_tags. */
 extern const AVCodecTag *const ff_riff_codec_tags_list[];
+/* The following list contains only ff_codec_wav_tags. */
+extern const AVCodecTag *const ff_wav_codec_tags_list[];
 
 extern const AVCodecTag ff_codec_bmp_tags_unofficial[];
 

libavformat/wavdec.c

@@ -821,7 +821,7 @@ AVInputFormat ff_wav_demuxer = {
     .read_packet    = wav_read_packet,
     .read_seek      = wav_read_seek,
     .flags          = AVFMT_GENERIC_INDEX,
-    .codec_tag      = (const AVCodecTag * const []) { ff_codec_wav_tags,  0 },
+    .codec_tag      = ff_wav_codec_tags_list,
     .priv_class     = &wav_demuxer_class,
 };
 #endif /* CONFIG_WAV_DEMUXER */
@@ -978,7 +978,7 @@ AVInputFormat ff_w64_demuxer = {
     .read_packet    = wav_read_packet,
     .read_seek      = wav_read_seek,
     .flags          = AVFMT_GENERIC_INDEX,
-    .codec_tag      = (const AVCodecTag * const []) { ff_codec_wav_tags, 0 },
+    .codec_tag      = ff_wav_codec_tags_list,
     .priv_class     = &w64_demuxer_class,
 };
 #endif /* CONFIG_W64_DEMUXER */

libavformat/wavenc.c

@@ -514,7 +514,7 @@ AVOutputFormat ff_wav_muxer = {
     .write_trailer     = wav_write_trailer,
     .deinit            = wav_deinit,
     .flags             = AVFMT_TS_NONSTRICT,
-    .codec_tag         = (const AVCodecTag* const []){ ff_codec_wav_tags, 0 },
+    .codec_tag         = ff_wav_codec_tags_list,
     .priv_class        = &wav_muxer_class,
 };
 #endif /* CONFIG_WAV_MUXER */
@@ -612,6 +612,6 @@ AVOutputFormat ff_w64_muxer = {
     .write_packet      = wav_write_packet,
     .write_trailer     = w64_write_trailer,
     .flags             = AVFMT_TS_NONSTRICT,
-    .codec_tag         = (const AVCodecTag* const []){ ff_codec_wav_tags, 0 },
+    .codec_tag         = ff_wav_codec_tags_list,
 };
 #endif /* CONFIG_W64_MUXER */