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h265parse: Fix FPS/duration for interlaced files

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There can be h265 files with frame-based, not field-based, interlacing.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2020>
This commit is contained in:
Vivia Nikolaidou 2021-02-17 13:46:03 +02:00
parent 3be9a1baa0
commit 21347e13f5
1 changed files with 61 additions and 43 deletions
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104
gst/videoparsers/gsth265parse.c
View file

@ -1929,6 +1929,31 @@ ensure_caps_profile (GstH265Parse * h265parse, GstCaps * caps, GstH265SPS * sps,
gst_caps_unref (peer_caps);
}
static gboolean
gst_h265_parse_is_field_interlaced (GstH265Parse * h265parse)
{
/* FIXME: The SEI is optional, so theoretically there could be files with
* the interlaced_source_flag set to TRUE but no SEI present, or SEI present
* but no pic_struct. Haven't seen any such files in practice, and we don't
* know how to interpret the data without the pic_struct, so we'll treat
* them as progressive */
switch (h265parse->sei_pic_struct) {
case GST_H265_SEI_PIC_STRUCT_TOP_FIELD:
case GST_H265_SEI_PIC_STRUCT_TOP_PAIRED_PREVIOUS_BOTTOM:
case GST_H265_SEI_PIC_STRUCT_TOP_PAIRED_NEXT_BOTTOM:
case GST_H265_SEI_PIC_STRUCT_BOTTOM_FIELD:
case GST_H265_SEI_PIC_STRUCT_BOTTOM_PAIRED_PREVIOUS_TOP:
case GST_H265_SEI_PIC_STRUCT_BOTTOM_PAIRED_NEXT_TOP:
return TRUE;
break;
default:
break;
}
return FALSE;
}
static void
gst_h265_parse_update_src_caps (GstH265Parse * h265parse, GstCaps * caps)
{
@ -2005,7 +2030,7 @@ gst_h265_parse_update_src_caps (GstH265Parse * h265parse, GstCaps * caps)
if (G_UNLIKELY (h265parse->width != crop_width ||
h265parse->height != crop_height)) {
h265parse->width = crop_width;
h265parse->height = sps->profile_tier_level.interlaced_source_flag ?
h265parse->height = gst_h265_parse_is_field_interlaced (h265parse) ?
crop_height * 2 : crop_height;
GST_INFO_OBJECT (h265parse, "resolution changed %dx%d",
h265parse->width, h265parse->height);
@ -2024,8 +2049,16 @@ gst_h265_parse_update_src_caps (GstH265Parse * h265parse, GstCaps * caps)
fps_num = sps->vui_params.time_scale;
fps_den = sps->vui_params.num_units_in_tick;
if (sps->profile_tier_level.interlaced_source_flag)
fps_num /= 2;
if (gst_h265_parse_is_field_interlaced (h265parse)
&& h265parse->parsed_framerate) {
gint new_fps_num, new_fps_den;
gst_util_fraction_multiply (fps_num, fps_den, 1, 2, &new_fps_num,
&new_fps_den);
fps_num = new_fps_num;
fps_den = new_fps_den;
h265parse->parsed_framerate = FALSE;
}
}
if (G_UNLIKELY (h265parse->fps_num != fps_num
@ -2340,11 +2373,10 @@ gst_h265_parse_parse_frame (GstBaseParse * parse, GstBaseParseFrame * frame)
gst_h265_parse_update_src_caps (h265parse, NULL);
if (h265parse->fps_num > 0 && h265parse->fps_den > 0) {
GstH265SPS *sps = h265parse->nalparser->last_sps;
GstClockTime val;
GstClockTime val =
gst_h265_parse_is_field_interlaced (h265parse) ? GST_SECOND /
2 : GST_SECOND;
val = (sps != NULL && sps->profile_tier_level.interlaced_source_flag) ?
GST_SECOND / 2 : GST_SECOND;
GST_BUFFER_DURATION (buffer) = gst_util_uint64_scale (val,
h265parse->fps_den, h265parse->fps_num);
}
@ -2753,36 +2785,28 @@ gst_h265_parse_pre_push_frame (GstBaseParse * parse, GstBaseParseFrame * frame)
parse_buffer = frame->buffer = gst_buffer_make_writable (frame->buffer);
}
if (h265parse->sei_pic_struct != GST_H265_SEI_PIC_STRUCT_FRAME) {
if (h265parse->parsed_framerate) {
/* If the frame rate doesn't come from upstream (e.g. a muxer), it means
* we must double it, because it's now fields per second */
gint new_fps_n, new_fps_d;
gst_util_fraction_multiply (h265parse->fps_num, h265parse->fps_den, 2, 1,
&new_fps_n, &new_fps_d);
h265parse->fps_num = new_fps_n;
h265parse->fps_den = new_fps_d;
h265parse->parsed_framerate = FALSE;
/* We need to fix the duration of the first frame */
GST_BUFFER_DURATION (parse_buffer) /= 2;
}
GST_BUFFER_FLAG_SET (parse_buffer, GST_VIDEO_BUFFER_FLAG_INTERLACED);
/* h265 doesn't support interleaved */
switch (h265parse->sei_pic_struct) {
case GST_H265_SEI_PIC_STRUCT_TOP_FIELD:
case GST_H265_SEI_PIC_STRUCT_TOP_PAIRED_NEXT_BOTTOM:
case GST_H265_SEI_PIC_STRUCT_TOP_PAIRED_PREVIOUS_BOTTOM:
GST_BUFFER_FLAG_SET (parse_buffer, GST_VIDEO_BUFFER_FLAG_TOP_FIELD);
break;
case GST_H265_SEI_PIC_STRUCT_BOTTOM_FIELD:
case GST_H265_SEI_PIC_STRUCT_BOTTOM_PAIRED_PREVIOUS_TOP:
case GST_H265_SEI_PIC_STRUCT_BOTTOM_PAIRED_NEXT_TOP:
GST_BUFFER_FLAG_SET (parse_buffer, GST_VIDEO_BUFFER_FLAG_BOTTOM_FIELD);
break;
default:
break;
}
/* see section D.3.3 of the spec */
switch (h265parse->sei_pic_struct) {
case GST_H265_SEI_PIC_STRUCT_TOP_BOTTOM:
case GST_H265_SEI_PIC_STRUCT_BOTTOM_TOP:
case GST_H265_SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
case GST_H265_SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
GST_BUFFER_FLAG_SET (parse_buffer, GST_VIDEO_BUFFER_FLAG_INTERLACED);
break;
case GST_H265_SEI_PIC_STRUCT_TOP_FIELD:
case GST_H265_SEI_PIC_STRUCT_TOP_PAIRED_NEXT_BOTTOM:
case GST_H265_SEI_PIC_STRUCT_TOP_PAIRED_PREVIOUS_BOTTOM:
GST_BUFFER_FLAG_SET (parse_buffer, GST_VIDEO_BUFFER_FLAG_INTERLACED);
GST_BUFFER_FLAG_SET (parse_buffer, GST_VIDEO_BUFFER_FLAG_TOP_FIELD);
break;
case GST_H265_SEI_PIC_STRUCT_BOTTOM_FIELD:
case GST_H265_SEI_PIC_STRUCT_BOTTOM_PAIRED_PREVIOUS_TOP:
case GST_H265_SEI_PIC_STRUCT_BOTTOM_PAIRED_NEXT_TOP:
GST_BUFFER_FLAG_SET (parse_buffer, GST_VIDEO_BUFFER_FLAG_INTERLACED);
GST_BUFFER_FLAG_SET (parse_buffer, GST_VIDEO_BUFFER_FLAG_BOTTOM_FIELD);
break;
default:
break;
}
{
@ -2860,12 +2884,6 @@ gst_h265_parse_pre_push_frame (GstBaseParse * parse, GstBaseParseFrame * frame)
}
}
if (h265parse->sei_pic_struct != GST_H265_SEI_PIC_STRUCT_FRAME) {
GST_BUFFER_FLAG_SET (parse_buffer, GST_VIDEO_BUFFER_FLAG_INTERLACED);
if (h265parse->sei_pic_struct == GST_H265_SEI_PIC_STRUCT_TOP_FIELD)
GST_BUFFER_FLAG_SET (parse_buffer, GST_VIDEO_BUFFER_FLAG_TFF);
}
gst_video_push_user_data ((GstElement *) h265parse, &h265parse->user_data,
parse_buffer);