turn on E-AC-3 decoding support and update the Changelog

Originally committed as revision 15103 to svn://svn.ffmpeg.org/ffmpeg/trunk

Changelog

@@ -134,6 +134,7 @@ version <next>
 - AAC decoder
 - floating point PCM encoder/decoder
 - MXF muxer
+- E-AC-3 support added to AC-3 decoder
 
 version 0.4.9-pre1:
 

libavcodec/Makefile

@@ -27,7 +27,7 @@ OBJS-$(CONFIG_ENCODERS)                += faandct.o jfdctfst.o jfdctint.o
 
 OBJS-$(CONFIG_AAC_DECODER)             += aac.o aactab.o mdct.o fft.o
 OBJS-$(CONFIG_AASC_DECODER)            += aasc.o
-OBJS-$(CONFIG_AC3_DECODER)             += ac3dec.o ac3tab.o ac3dec_data.o ac3.o mdct.o fft.o
+OBJS-$(CONFIG_AC3_DECODER)             += eac3dec.o ac3dec.o ac3tab.o ac3dec_data.o ac3.o mdct.o fft.o
 OBJS-$(CONFIG_AC3_ENCODER)             += ac3enc.o ac3tab.o ac3.o
 OBJS-$(CONFIG_ALAC_DECODER)            += alac.o
 OBJS-$(CONFIG_ALAC_ENCODER)            += alacenc.o lpc.o

libavcodec/ac3dec.c

@@ -317,9 +317,8 @@ static int parse_frame_header(AC3DecodeContext *s)
         memset(s->channel_uses_aht, 0, sizeof(s->channel_uses_aht));
         return ac3_parse_header(s);
     } else {
-        /*s->eac3 = 1;
-        return ff_eac3_parse_header(s);*/
-        return AC3_PARSE_ERROR_BSID;
+        s->eac3 = 1;
+        return ff_eac3_parse_header(s);
     }
 }
 
@@ -557,10 +556,8 @@ static void decode_transform_coeffs_ch(AC3DecodeContext *s, int blk, int ch,
         /* if AHT is used, mantissas for all blocks are encoded in the first
            block of the frame. */
         int bin;
-        /*
         if (!blk)
             ff_eac3_decode_transform_coeffs_aht_ch(s, ch);
-        */
         for (bin = s->start_freq[ch]; bin < s->end_freq[ch]; bin++) {
             s->fixed_coeffs[ch][bin] = s->pre_mantissa[ch][bin][blk] >> s->dexps[ch][bin];
         }