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Use a callback to notify a new frame

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Make the decoder independant of the SDL even mechanism, by making the
consumer register a callback on the video_buffer.
This commit is contained in:
Romain Vimont
2021-02-19 22:02:36 +01:00
parent c50b958ee4
commit fb9f9848bd
4 changed files with 59 additions and 7 deletions
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15
app/src/video_buffer.h
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@@ -39,6 +39,16 @@ struct video_buffer {
sc_cond pending_frame_consumed_cond;
bool pending_frame_consumed;
const struct video_buffer_callbacks *cbs;
void *cbs_userdata;
};
struct video_buffer_callbacks {
// Called when a new frame can be consumed by
// video_buffer_consumer_take_frame(vb)
// This callback is mandatory (it must not be NULL).
void (*on_frame_available)(struct video_buffer *vb, void *userdata);
};
bool
@@ -47,6 +57,11 @@ video_buffer_init(struct video_buffer *vb, bool wait_consumer);
void
video_buffer_destroy(struct video_buffer *vb);
void
video_buffer_set_consumer_callbacks(struct video_buffer *vb,
const struct video_buffer_callbacks *cbs,
void *cbs_userdata);
// set the producer frame as ready for consuming
// the output flag is set to report whether the previous frame has been skipped
void