[FFmpeg-devel] [PATCH v2] avcodec/libdav1d: export decoder frame delay
James Almer
jamrial at gmail.com
Wed May 17 02:41:29 EEST 2023
As this is an AV_CODEC_CAP_OTHER_THREADS decoder, threading is handled by the
underlying library. In this case, the frame delay is calculated by libdav1d
based on the values from avctx->thread_count and the private max_frame_delay
option.
Export said delay reported by the library in AVCodecContext.delay
Signed-off-by: James Almer <jamrial at gmail.com>
---
Now using the existing AVCodecContext field for this purpose instead of a
private field that needs to be accessed through the AVOption API.
libavcodec/libdav1d.c | 9 +++++++++
libavcodec/version.h | 2 +-
2 files changed, 10 insertions(+), 1 deletion(-)
diff --git a/libavcodec/libdav1d.c b/libavcodec/libdav1d.c
index 4c48f0099a..c15e98cbd1 100644
--- a/libavcodec/libdav1d.c
+++ b/libavcodec/libdav1d.c
@@ -276,6 +276,15 @@ static av_cold int libdav1d_init(AVCodecContext *c)
if (res < 0)
return AVERROR(ENOMEM);
+#if FF_DAV1D_VERSION_AT_LEAST(6,7)
+ res = dav1d_get_frame_delay(&s);
+ if (res < 0) // Should not happen
+ return AVERROR_EXTERNAL;
+
+ // When dav1d_get_frame_delay() returns 1, there's no delay whatsoever
+ c->delay = res > 1 ? res : 0;
+#endif
+
return 0;
}
diff --git a/libavcodec/version.h b/libavcodec/version.h
index da2264a097..2e28c23410 100644
--- a/libavcodec/version.h
+++ b/libavcodec/version.h
@@ -30,7 +30,7 @@
#include "version_major.h"
#define LIBAVCODEC_VERSION_MINOR 12
-#define LIBAVCODEC_VERSION_MICRO 100
+#define LIBAVCODEC_VERSION_MICRO 101
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
LIBAVCODEC_VERSION_MINOR, \
--
2.40.1
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