Commit e5904f2d authored by Attila Nagy's avatar Attila Nagy
Browse files

Delay auto key frame insertion in realtime configuration

Whe auto keyframe insertion is enabled and conditions are right (scene change)
the encoder can decide to insert a key frame and does a re-encoding. This can
introduce extra latency. In RT mode we do not do the re-encoding of the current
frame but force the next frame to key frame.

Change-Id: I15c175fa845ac4c1a1f18bea3676e154669522a7
parent a5ecaca6
......@@ -3603,6 +3603,17 @@ static void encode_frame_to_data_rate
// Test code for segmentation of gf/arf (0,0)
//segmentation_test_function((VP8_PTR) cpi);
#if CONFIG_REALTIME_ONLY
if(cpi->oxcf.auto_key && cm->frame_type != KEY_FRAME)
{
if(cpi->force_next_frame_intra)
{
cm->frame_type = KEY_FRAME; /* delayed intra frame */
}
}
cpi->force_next_frame_intra = 0;
#endif
// For an alt ref frame in 2 pass we skip the call to the second pass function that sets the target bandwidth
#if !(CONFIG_REALTIME_ONLY)
......@@ -4113,6 +4124,14 @@ static void encode_frame_to_data_rate
// (assuming that we didn't)!
if (cpi->pass != 2 && cpi->oxcf.auto_key && cm->frame_type != KEY_FRAME)
{
#if CONFIG_REALTIME_ONLY
{
/* we don't do re-encoding in realtime mode
* if key frame is decided than we force it on next frame */
cpi->force_next_frame_intra = decide_key_frame(cpi);
}
#else
if (decide_key_frame(cpi))
{
vp8_calc_auto_iframe_target_size(cpi);
......@@ -4151,6 +4170,7 @@ static void encode_frame_to_data_rate
resize_key_frame(cpi);
continue;
}
#endif
}
vp8_clear_system_state();
......
......@@ -679,6 +679,9 @@ typedef struct
int *lf_ref_frame_sign_bias;
int *lf_ref_frame;
#if CONFIG_REALTIME_ONLY
int force_next_frame_intra; /* force next frame to intra when kf_auto says so */
#endif
} VP8_COMP;
void control_data_rate(VP8_COMP *cpi);
......
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