[FFmpeg-devel] [PATCH v2 2/3] avcodec/decode: check the output frame for discard samples with all decoders

From: James Almer <jamrial@gmail.com>
To: ffmpeg-devel@ffmpeg.org
Subject: [FFmpeg-devel] [PATCH v2 2/3] avcodec/decode: check the output frame for discard samples with all decoders
Date: Sun,  9 Jul 2023 10:39:16 -0300
Message-ID: <20230709133917.5403-2-jamrial@gmail.com> (raw)
In-Reply-To: <20230709133917.5403-1-jamrial@gmail.com>

And not just those with the old decode() API.

Signed-off-by: James Almer <jamrial@gmail.com>
---
 libavcodec/decode.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/libavcodec/decode.c b/libavcodec/decode.c
index a39af2d014..b3e4b066e5 100644
--- a/libavcodec/decode.c
+++ b/libavcodec/decode.c
@@ -597,6 +597,14 @@ static int decode_receive_frame_internal(AVCodecContext *avctx, AVFrame *frame)
     if (codec->cb_type == FF_CODEC_CB_TYPE_RECEIVE_FRAME) {
         ret = codec->cb.receive_frame(avctx, frame);
         emms_c();
+        if (!ret) {
+            if (avctx->codec->type == AVMEDIA_TYPE_VIDEO)
+                ret = (frame->flags & AV_FRAME_FLAG_DISCARD) ? AVERROR(EAGAIN) : 0;
+            else if (avctx->codec->type == AVMEDIA_TYPE_AUDIO) {
+                int64_t discarded_samples = 0;
+                ret = discard_samples(avctx, frame, &discarded_samples);
+            }
+        }
     } else
         ret = decode_simple_receive_frame(avctx, frame);
 
-- 
2.41.0

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