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avcodec/libdav1d: don't repeatedly parse the same sequence header 

Look at the event flag that signals a new sequence header was found
in the bitstream on supported libdav1d versions for this purpose.

Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2021-06-26 17:24:15 -03:00
parent 48eaf8ba1c
commit 7ee17ec7e4
1 changed files with 10 additions and 0 deletions
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10
libavcodec/libdav1d.c
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@ -33,6 +33,9 @@
#include "decode.h"
#include "internal.h"
#define FF_DAV1D_VERSION_AT_LEAST(x,y) \
(DAV1D_API_VERSION_MAJOR > (x) || DAV1D_API_VERSION_MAJOR == (x) && DAV1D_API_VERSION_MINOR >= (y))
typedef struct Libdav1dContext {
AVClass *class;
Dav1dContext *c;
@ -220,6 +223,9 @@ static int libdav1d_receive_frame(AVCodecContext *c, AVFrame *frame)
Libdav1dContext *dav1d = c->priv_data;
Dav1dData *data = &dav1d->data;
Dav1dPicture pic = { 0 }, *p = &pic;
#if FF_DAV1D_VERSION_AT_LEAST(5,1)
enum Dav1dEventFlags event_flags = 0;
#endif
int res;
if (!data->sz) {
@ -296,6 +302,10 @@ static int libdav1d_receive_frame(AVCodecContext *c, AVFrame *frame)
frame->linesize[1] = p->stride[1];
frame->linesize[2] = p->stride[1];
#if FF_DAV1D_VERSION_AT_LEAST(5,1)
dav1d_get_event_flags(dav1d->c, &event_flags);
if (event_flags & DAV1D_EVENT_FLAG_NEW_SEQUENCE)
#endif
libdav1d_init_params(c, p->seq_hdr);
res = ff_decode_frame_props(c, frame);
if (res < 0)