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| author | Alex Converse <alex.converse@gmail.com> | 2015-01-21 21:35:53 -0800 |
|---|---|---|
| committer | Alex Converse <alex.converse@gmail.com> | 2015-02-03 20:32:15 -0800 |
| commit | 82bd8a57692d8f3643ad0903c97e4a0f84393f53 (patch) | |
| tree | 786f2527282772f8ffe72a403dbe47d3e3b7310f /libavcodec | |
| parent | 898276c16b1683ac77723e97574a3bfdb29507fd (diff) | |
| download | ffmpeg-82bd8a57692d8f3643ad0903c97e4a0f84393f53.tar.gz | |
aacdec: Refactor decode_ics_info.
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/aacdec.c | 26 |
1 files 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); |