Support writing E-AC3 in wav.

libavformat/riff.c

@@ -413,6 +413,8 @@ const AVCodecTag ff_codec_wav_tags[] = {
     { AV_CODEC_ID_AAC,             0x1600 },
     { AV_CODEC_ID_AAC_LATM,        0x1602 },
     { AV_CODEC_ID_AC3,             0x2000 },
+    /* There is no Microsoft Format Tag for E-AC3, the GUID has to be used */
+    { AV_CODEC_ID_EAC3,            0x2000 },
     { AV_CODEC_ID_DTS,             0x2001 },
     { AV_CODEC_ID_SONIC,           0x2048 },
     { AV_CODEC_ID_SONIC_LS,        0x2048 },

libavformat/riffenc.c

@@ -72,6 +72,7 @@ int ff_put_wav_header(AVIOContext *pb, AVCodecContext *enc)
 
     waveformatextensible = (enc->channels > 2 && enc->channel_layout) ||
                            enc->sample_rate > 48000 ||
+                           enc->codec_id == AV_CODEC_ID_EAC3 ||
                            av_get_bits_per_sample(enc->codec_id) > 16;
 
     if (waveformatextensible)
@@ -183,10 +184,14 @@ int ff_put_wav_header(AVIOContext *pb, AVCodecContext *enc)
         /* dwChannelMask */
         avio_wl32(pb, enc->channel_layout);
         /* GUID + next 3 */
+        if (enc->codec_id == AV_CODEC_ID_EAC3) {
+            ff_put_guid(pb, get_codec_guid(enc->codec_id, ff_codec_wav_guids));
+        } else {
         avio_wl32(pb, enc->codec_tag);
         avio_wl32(pb, 0x00100000);
         avio_wl32(pb, 0xAA000080);
         avio_wl32(pb, 0x719B3800);
+        }
     } else {
         avio_wl16(pb, riff_extradata - riff_extradata_start); /* cbSize */
     }

libavformat/version.h

@@ -31,7 +31,7 @@
 
 #define LIBAVFORMAT_VERSION_MAJOR 55
 #define LIBAVFORMAT_VERSION_MINOR 28
-#define LIBAVFORMAT_VERSION_MICRO 100
+#define LIBAVFORMAT_VERSION_MICRO 101
 
 #define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
                                                LIBAVFORMAT_VERSION_MINOR, \