From f26ecb7adba1f28017005a557c2875901c3b16fa Mon Sep 17 00:00:00 2001 From: Daniil Cherednik Date: Sat, 14 Nov 2015 01:57:25 +0300 Subject: [PATCH] fix atrac1 decoder: QMF delay compensation should be 39 samples --- libavcodec/atrac1.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/libavcodec/atrac1.c b/libavcodec/atrac1.c index b70cf4f..a8c8c91 100644 --- a/libavcodec/atrac1.c +++ b/libavcodec/atrac1.c @@ -65,7 +65,7 @@ typedef struct AT1SUCtx { DECLARE_ALIGNED(32, float, spec2)[AT1_SU_SAMPLES]; ///< mdct buffer DECLARE_ALIGNED(32, float, fst_qmf_delay)[46]; ///< delay line for the 1st stacked QMF filter DECLARE_ALIGNED(32, float, snd_qmf_delay)[46]; ///< delay line for the 2nd stacked QMF filter - DECLARE_ALIGNED(32, float, last_qmf_delay)[256+23]; ///< delay line for the last stacked QMF filter + DECLARE_ALIGNED(32, float, last_qmf_delay)[256+39]; ///< delay line for the last stacked QMF filter } AT1SUCtx; /** @@ -260,9 +260,9 @@ static void at1_subband_synthesis(AT1Ctx *q, AT1SUCtx* su, float *pOut) /* combine low and middle bands */ ff_atrac_iqmf(q->bands[0], q->bands[1], 128, temp, su->fst_qmf_delay, iqmf_temp); - /* delay the signal of the high band by 23 samples */ - memcpy( su->last_qmf_delay, &su->last_qmf_delay[256], sizeof(float) * 23); - memcpy(&su->last_qmf_delay[23], q->bands[2], sizeof(float) * 256); + /* delay the signal of the high band by 39 samples */ + memcpy( su->last_qmf_delay, &su->last_qmf_delay[256], sizeof(float) * 39); + memcpy(&su->last_qmf_delay[39], q->bands[2], sizeof(float) * 256); /* combine (low + middle) and high bands */ ff_atrac_iqmf(temp, su->last_qmf_delay, 256, pOut, su->snd_qmf_delay, iqmf_temp); -- 2.3.8 (Apple Git-58)