From 02f05b5d81597bacc28b9b400f4aa262856a7a2e Mon Sep 17 00:00:00 2001 From: Paul B Mahol Date: Sat, 21 Jan 2023 14:07:48 +0100 Subject: [PATCH 3/3] avcodec/dpcm: add .flush Otherwise after seek, DC offset for audio samples might be big. Signed-off-by: Paul B Mahol --- libavcodec/dpcm.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/libavcodec/dpcm.c b/libavcodec/dpcm.c index 2420647bc0..86cb9134f8 100644 --- a/libavcodec/dpcm.c +++ b/libavcodec/dpcm.c @@ -448,6 +448,13 @@ static int dpcm_decode_frame(AVCodecContext *avctx, AVFrame *frame, return avpkt->size; } +static void dpcm_flush(AVCodecContext *avctx) +{ + DPCMContext *s = avctx->priv_data; + + s->sample[0] = s->sample[1] = 0; +} + #define DPCM_DECODER(id_, name_, long_name_) \ const FFCodec ff_ ## name_ ## _decoder = { \ .p.name = #name_, \ @@ -457,6 +464,7 @@ const FFCodec ff_ ## name_ ## _decoder = { \ .p.capabilities = AV_CODEC_CAP_DR1, \ .priv_data_size = sizeof(DPCMContext), \ .init = dpcm_decode_init, \ + .flush = dpcm_flush, \ FF_CODEC_DECODE_CB(dpcm_decode_frame), \ } -- 2.39.1