[SCM] libav/experimental: aacsbr: Initialize e_a[1] to -1.

[siretart at users.alioth.debian.org]

The following commit has been merged in the experimental branch:
commit 46751a65e384248631aa000f8d5e04e695db612a
Author: Alex Converse <alex.converse at gmail.com>
Date:   Tue Mar 9 20:16:14 2010 +0000

    aacsbr: Initialize e_a[1] to -1.
    
    This triggers lAPrev (e_a[0]) on the first SBR frame to be -1. The spec is
    somewhat ambiguous to what this value should be but this increases the accuracy
    of al_sbr_e_44_1 and similar streams from 14 bits to 15 bits.
    
    Originally committed as revision 22408 to svn://svn.ffmpeg.org/ffmpeg/trunk

diff --git a/libavcodec/aacsbr.c b/libavcodec/aacsbr.c
index a1e57ee..ac86a8d 100644
--- a/libavcodec/aacsbr.c
+++ b/libavcodec/aacsbr.c
@@ -138,6 +138,7 @@ av_cold void ff_aac_sbr_init(void)
 av_cold void ff_aac_sbr_ctx_init(SpectralBandReplication *sbr)
 {
     sbr->kx[0] = sbr->kx[1] = 32; //Typo in spec, kx' inits to 32
+    sbr->data[0].e_a[1] = sbr->data[1].e_a[1] = -1;
     sbr->data[0].synthesis_filterbank_samples_offset = SBR_SYNTHESIS_BUF_SIZE - (1280 - 128);
     sbr->data[1].synthesis_filterbank_samples_offset = SBR_SYNTHESIS_BUF_SIZE - (1280 - 128);
     ff_mdct_init(&sbr->mdct, 7, 1, 1.0/64);

-- 
Libav/FFmpeg packaging