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stereo3d: Support view type for frame sequence type

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Implement detection in h264 and hevc and insertion in framepack filter.

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
This commit is contained in:
Vittorio Giovara 2017-09-25 15:09:21 +02:00
parent 45d7be7f93
commit 99e9697e3a
10 changed files with 55 additions and 8 deletions
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3
doc/APIchanges
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@ -13,6 +13,9 @@ libavutil: 2017-03-23
API changes, most recent first:
2017-xx-xx - xxxxxxx - lavu 56.7.0 - stereo3d.h
Add view field to AVStereo3D structure and AVStereo3DView enum.
2017-xx-xx - xxxxxxx - lavc 58.5.0 - avcodec.h
Add avcodec_get_hw_frames_parameters().

7
libavcodec/h264_sei.c
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@ -314,10 +314,11 @@ static int decode_frame_packing_arrangement(H264SEIFramePacking *h,
h->quincunx_subsampling = get_bits1(gb);
h->content_interpretation_type = get_bits(gb, 6);
// the following skips: spatial_flipping_flag, frame0_flipped_flag,
// field_views_flag, current_frame_is_frame0_flag,
// spatial_flipping_flag, frame0_flipped_flag, field_views_flag
skip_bits(gb, 3);
h->current_frame_is_frame0_flag = get_bits1(gb);
// frame0_self_contained_flag, frame1_self_contained_flag
skip_bits(gb, 6);
skip_bits(gb, 2);
if (!h->quincunx_subsampling && h->arrangement_type != 5)
skip_bits(gb, 16); // frame[01]_grid_position_[xy]

1
libavcodec/h264_sei.h
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@ -108,6 +108,7 @@ typedef struct H264SEIFramePacking {
int arrangement_type;
int content_interpretation_type;
int quincunx_subsampling;
int current_frame_is_frame0_flag;
} H264SEIFramePacking;
typedef struct H264SEIDisplayOrientation {

7
libavcodec/h264_slice.c
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@ -1112,6 +1112,13 @@ static int h264_export_frame_props(H264Context *h)
if (fp->content_interpretation_type == 2)
stereo->flags = AV_STEREO3D_FLAG_INVERT;
if (fp->arrangement_type == 5) {
if (fp->current_frame_is_frame0_flag)
stereo->view = AV_STEREO3D_VIEW_LEFT;
else
stereo->view = AV_STEREO3D_VIEW_RIGHT;
}
}
if (h->sei.display_orientation.present &&

9
libavcodec/hevc_sei.c
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@ -57,10 +57,11 @@ static int decode_nal_sei_frame_packing_arrangement(HEVCSEIFramePacking *s, GetB
s->quincunx_subsampling = get_bits1(gb);
s->content_interpretation_type = get_bits(gb, 6);
// the following skips spatial_flipping_flag frame0_flipped_flag
// field_views_flag current_frame_is_frame0_flag
// frame0_self_contained_flag frame1_self_contained_flag
skip_bits(gb, 6);
// spatial_flipping_flag, frame0_flipped_flag, field_views_flag
skip_bits(gb, 3);
s->current_frame_is_frame0_flag = get_bits1(gb);
// frame0_self_contained_flag, frame1_self_contained_flag
skip_bits(gb, 2);
if (!s->quincunx_subsampling && s->arrangement_type != 5)
skip_bits(gb, 16); // frame[01]_grid_position_[xy]

1
libavcodec/hevc_sei.h
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@ -67,6 +67,7 @@ typedef struct HEVCSEIFramePacking {
int arrangement_type;
int content_interpretation_type;
int quincunx_subsampling;
int current_frame_is_frame0_flag;
} HEVCSEIFramePacking;
typedef struct HEVCSEIDisplayOrientation {

7
libavcodec/hevcdec.c
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@ -2397,6 +2397,13 @@ static int set_side_data(HEVCContext *s)
if (s->sei.frame_packing.content_interpretation_type == 2)
stereo->flags = AV_STEREO3D_FLAG_INVERT;
if (s->sei.frame_packing.arrangement_type == 5) {
if (s->sei.frame_packing.current_frame_is_frame0_flag)
stereo->view = AV_STEREO3D_VIEW_LEFT;
else
stereo->view = AV_STEREO3D_VIEW_RIGHT;
}
}
if (s->sei.display_orientation.present &&

2
libavfilter/vf_framepack.c
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@ -310,6 +310,8 @@ static int request_frame(AVFilterLink *outlink)
if (!stereo)
return AVERROR(ENOMEM);
stereo->type = s->format;
stereo->view = i == LEFT ? AV_STEREO3D_VIEW_LEFT
: AV_STEREO3D_VIEW_RIGHT;
// filter the frame and immediately relinquish its pointer
ret = ff_filter_frame(outlink, s->input_views[i]);

24
libavutil/stereo3d.h
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@ -141,6 +141,25 @@ enum AVStereo3DType {
AV_STEREO3D_COLUMNS,
};
/**
* List of possible view types.
*/
enum AVStereo3DView {
/**
* Frame contains two packed views.
*/
AV_STEREO3D_VIEW_PACKED,
/**
* Frame contains only the left view.
*/
AV_STEREO3D_VIEW_LEFT,
/**
* Frame contains only the right view.
*/
AV_STEREO3D_VIEW_RIGHT,
};
/**
* Inverted views, Right/Bottom represents the left view.
@ -164,6 +183,11 @@ typedef struct AVStereo3D {
* Additional information about the frame packing.
*/
int flags;
/**
* Determines which views are packed.
*/
enum AVStereo3DView view;
} AVStereo3D;
/**

2
libavutil/version.h
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@ -54,7 +54,7 @@
*/
#define LIBAVUTIL_VERSION_MAJOR 56
#define LIBAVUTIL_VERSION_MINOR 6
#define LIBAVUTIL_VERSION_MINOR 7
#define LIBAVUTIL_VERSION_MICRO 0
#define LIBAVUTIL_VERSION_INT AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \