From d268b79e3436107c11ee8bcdf9f3645368bb3fcd Mon Sep 17 00:00:00 2001 From: Janne Grunau Date: Sat, 22 Oct 2011 22:04:00 +0200 Subject: [PATCH] aac_latm: reconfigure decoder on audio specific config changes --- libavcodec/aacdec.c | 25 +++++++++++++++---------- 1 file changed, 15 insertions(+), 10 deletions(-) diff --git a/libavcodec/aacdec.c b/libavcodec/aacdec.c index a4fe2ee2cc..8e4b510354 100644 --- a/libavcodec/aacdec.c +++ b/libavcodec/aacdec.c @@ -2319,8 +2319,9 @@ static inline uint32_t latm_get_value(GetBitContext *b) static int latm_decode_audio_specific_config(struct LATMContext *latmctx, GetBitContext *gb, int asclen) { - AVCodecContext *avctx = latmctx->aac_ctx.avctx; - MPEG4AudioConfig m4ac; + AACContext *ac = &latmctx->aac_ctx; + AVCodecContext *avctx = ac->avctx; + MPEG4AudioConfig m4ac = {0}; int config_start_bit = get_bits_count(gb); int sync_extension = 0; int bits_consumed, esize; @@ -2335,18 +2336,23 @@ static int latm_decode_audio_specific_config(struct LATMContext *latmctx, av_log_missing_feature(latmctx->aac_ctx.avctx, "audio specific " "config not byte aligned.\n", 1); return AVERROR_INVALIDDATA; - } else { - bits_consumed = - decode_audio_specific_config(NULL, avctx, &m4ac, + } + bits_consumed = decode_audio_specific_config(NULL, avctx, &m4ac, gb->buffer + (config_start_bit / 8), asclen, sync_extension); - if (bits_consumed < 0) - return AVERROR_INVALIDDATA; + if (bits_consumed < 0) + return AVERROR_INVALIDDATA; + + if (ac->m4ac.sample_rate != m4ac.sample_rate || + ac->m4ac.chan_config != m4ac.chan_config) { + + av_log(avctx, AV_LOG_INFO, "audio config changed\n"); + latmctx->initialized = 0; esize = (bits_consumed+7) / 8; - if (avctx->extradata_size <= esize) { + if (avctx->extradata_size < esize) { av_free(avctx->extradata); avctx->extradata = av_malloc(esize + FF_INPUT_BUFFER_PADDING_SIZE); if (!avctx->extradata) @@ -2356,9 +2362,8 @@ static int latm_decode_audio_specific_config(struct LATMContext *latmctx, avctx->extradata_size = esize; memcpy(avctx->extradata, gb->buffer + (config_start_bit/8), esize); memset(avctx->extradata+esize, 0, FF_INPUT_BUFFER_PADDING_SIZE); - - skip_bits_long(gb, bits_consumed); } + skip_bits_long(gb, bits_consumed); return bits_consumed; }