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vah265enc: Use a FIFO queue to generate DTS

Browse source 
The base parse will infer the DTS by itself, so we need to make DTS
offset before PTS in order to avoid DTS bigger than PTS. We now use
a FIFO queue to store all PTS and assign it to DTS by an offset.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6791>
This commit is contained in:
He Junyan 2024-05-03 12:08:19 +08:00 committed by GStreamer Marge Bot
parent 20ebf6bbb9
commit f340429681
1 changed files with 21 additions and 25 deletions
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46
subprojects/gst-plugins-bad/sys/va/gstvah265enc.c
View file

@ -333,7 +333,6 @@ struct _GstVaH265Enc
guint cpb_length_bits;
} rc;
GstClockTime last_dts;
GstH265VPS vps_hdr;
GstH265SPS sps_hdr;
};
@ -350,7 +349,6 @@ struct _GstVaH265EncFrame
gint poc;
gboolean last_frame;
gboolean reorder;
};
/**
@ -452,7 +450,6 @@ gst_va_h265_enc_frame_new (void)
frame = g_new (GstVaH265EncFrame, 1);
frame->last_frame = FALSE;
frame->picture = NULL;
frame->reorder = FALSE;
return frame;
}
@ -2193,9 +2190,6 @@ again:
/* it will unref at pop_frame */
f = g_queue_pop_nth (&base->reorder_list, index);
g_assert (f == b_frame);
if (index > 0)
_enc_frame (f)->reorder = TRUE;
} else {
b_frame = NULL;
}
@ -2224,9 +2218,6 @@ _h265_pop_one_frame (GstVaBaseEnc * base, GstVideoCodecFrame ** out_frame)
vaframe = _enc_frame (frame);
if (vaframe->type != GST_H265_B_SLICE) {
frame = g_queue_pop_tail (&base->reorder_list);
if (!g_queue_is_empty (&base->reorder_list))
vaframe->reorder = TRUE;
goto get_one;
}
@ -2542,7 +2533,6 @@ gst_va_h265_enc_reset_state (GstVaBaseEnc * base)
self->rc.target_bitrate_bits = 0;
self->rc.cpb_length_bits = 0;
self->last_dts = GST_CLOCK_TIME_NONE;
memset (&self->vps_hdr, 0, sizeof (GstH265VPS));
memset (&self->sps_hdr, 0, sizeof (GstH265SPS));
}
@ -4668,15 +4658,28 @@ gst_va_h265_enc_flush (GstVideoEncoder * venc)
return GST_VIDEO_ENCODER_CLASS (parent_class)->flush (venc);
}
static gboolean
gst_va_h265_enc_start (GstVideoEncoder * venc)
{
/* Set the minimum pts to some huge value (1000 hours). This keeps
* the dts at the start of the stream from needing to be negative. */
gst_video_encoder_set_min_pts (venc, GST_SECOND * 60 * 60 * 1000);
return GST_VIDEO_ENCODER_CLASS (parent_class)->start (venc);
}
static gboolean
gst_va_h265_enc_new_frame (GstVaBaseEnc * base, GstVideoCodecFrame * frame)
{
GstVaH265Enc *self = GST_VA_H265_ENC (base);
GstVaH265EncFrame *frame_in;
frame_in = gst_va_h265_enc_frame_new ();
gst_video_codec_frame_set_user_data (frame, frame_in,
gst_va_h265_enc_frame_free);
gst_va_base_enc_push_dts (base, frame, self->gop.num_reorder_frames);
return TRUE;
}
@ -4684,27 +4687,19 @@ static gboolean
gst_va_h265_enc_prepare_output (GstVaBaseEnc * base,
GstVideoCodecFrame * frame, gboolean * complete)
{
GstVaH265Enc *self = GST_VA_H265_ENC (base);
GstVaH265EncFrame *frame_enc;
GstBuffer *buf;
frame_enc = _enc_frame (frame);
if (frame_enc->reorder) {
if (!GST_CLOCK_TIME_IS_VALID (self->last_dts)) {
GST_WARNING_OBJECT (base, "Reorder frame poc: %d, system frame "
"number: %d without previous valid DTS.", frame_enc->poc,
frame->system_frame_number);
frame->dts = gst_va_base_enc_pop_dts (base);
if (!GST_CLOCK_TIME_IS_VALID (frame->dts)) {
GST_DEBUG_OBJECT (base, "Pop invalid DTS.");
} else if (GST_CLOCK_TIME_IS_VALID (frame->pts) && frame->dts > frame->pts) {
GST_WARNING_OBJECT (base, "Pop DTS: %" GST_TIME_FORMAT " > PTS: %"
GST_TIME_FORMAT, GST_TIME_ARGS (frame->dts),
GST_TIME_ARGS (frame->pts));
frame->dts = frame->pts;
} else {
GST_LOG_OBJECT (base, "Set reorder frame poc: %d, system frame "
"number: %d with DTS: %" GST_TIME_FORMAT, frame_enc->poc,
frame->system_frame_number, GST_TIME_ARGS (self->last_dts));
frame->dts = self->last_dts;
}
} else {
frame->dts = frame->pts;
self->last_dts = frame->dts;
}
buf = gst_va_base_enc_create_output_buffer (base,
@ -5069,6 +5064,7 @@ gst_va_h265_enc_class_init (gpointer g_klass, gpointer class_data)
object_class->get_property = gst_va_h265_enc_get_property;
venc_class->flush = GST_DEBUG_FUNCPTR (gst_va_h265_enc_flush);
venc_class->start = GST_DEBUG_FUNCPTR (gst_va_h265_enc_start);
va_enc_class->reset_state = GST_DEBUG_FUNCPTR (gst_va_h265_enc_reset_state);
va_enc_class->reconfig = GST_DEBUG_FUNCPTR (gst_va_h265_enc_reconfig);