From 82bd8a57692d8f3643ad0903c97e4a0f84393f53 Mon Sep 17 00:00:00 2001 From: Alex Converse Date: Wed, 21 Jan 2015 21:35:53 -0800 Subject: [PATCH] aacdec: Refactor decode_ics_info. --- libavcodec/aacdec.c | 26 ++++++++++++++------------ 1 file changed, 14 insertions(+), 12 deletions(-) diff --git a/libavcodec/aacdec.c b/libavcodec/aacdec.c index 9c0a46d0d5..549e5e5cc6 100644 --- a/libavcodec/aacdec.c +++ b/libavcodec/aacdec.c @@ -1137,7 +1137,9 @@ static void decode_ltp(LongTermPrediction *ltp, static int decode_ics_info(AACContext *ac, IndividualChannelStream *ics, GetBitContext *gb) { - int aot = ac->oc[1].m4ac.object_type; + const MPEG4AudioConfig *const m4ac = &ac->oc[1].m4ac; + const int aot = m4ac->object_type; + const int sampling_index = m4ac->sampling_index; if (aot != AOT_ER_AAC_ELD) { if (get_bits1(gb)) { av_log(ac->avctx, AV_LOG_ERROR, "Reserved bit set.\n"); @@ -1170,23 +1172,23 @@ static int decode_ics_info(AACContext *ac, IndividualChannelStream *ics, } } ics->num_windows = 8; - ics->swb_offset = ff_swb_offset_128[ac->oc[1].m4ac.sampling_index]; - ics->num_swb = ff_aac_num_swb_128[ac->oc[1].m4ac.sampling_index]; - ics->tns_max_bands = ff_tns_max_bands_128[ac->oc[1].m4ac.sampling_index]; + ics->swb_offset = ff_swb_offset_128[sampling_index]; + ics->num_swb = ff_aac_num_swb_128[sampling_index]; + ics->tns_max_bands = ff_tns_max_bands_128[sampling_index]; ics->predictor_present = 0; } else { - ics->max_sfb = get_bits(gb, 6); - ics->num_windows = 1; + ics->max_sfb = get_bits(gb, 6); + ics->num_windows = 1; if (aot == AOT_ER_AAC_LD || aot == AOT_ER_AAC_ELD) { - ics->swb_offset = ff_swb_offset_512[ac->oc[1].m4ac.sampling_index]; - ics->num_swb = ff_aac_num_swb_512[ac->oc[1].m4ac.sampling_index]; - ics->tns_max_bands = ff_tns_max_bands_512[ac->oc[1].m4ac.sampling_index]; + ics->swb_offset = ff_swb_offset_512[sampling_index]; + ics->num_swb = ff_aac_num_swb_512[sampling_index]; + ics->tns_max_bands = ff_tns_max_bands_512[sampling_index]; if (!ics->num_swb || !ics->swb_offset) return AVERROR_BUG; } else { - ics->swb_offset = ff_swb_offset_1024[ac->oc[1].m4ac.sampling_index]; - ics->num_swb = ff_aac_num_swb_1024[ac->oc[1].m4ac.sampling_index]; - ics->tns_max_bands = ff_tns_max_bands_1024[ac->oc[1].m4ac.sampling_index]; + ics->swb_offset = ff_swb_offset_1024[sampling_index]; + ics->num_swb = ff_aac_num_swb_1024[sampling_index]; + ics->tns_max_bands = ff_tns_max_bands_1024[sampling_index]; } if (aot != AOT_ER_AAC_ELD) { ics->predictor_present = get_bits1(gb);