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avvidenc: Add Stereo3D mapping

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Add mapping between GStreamer multiview modes/flags and
libav Stereo3D frame packings when encoding video.

https://bugzilla.gnome.org/show_bug.cgi?id=767938
This commit is contained in:
Jan Schmidt 2017-03-16 15:23:01 +11:00
parent 8e6fbe7f63
commit bcbe3aff83
1 changed files with 36 additions and 0 deletions
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36
ext/libav/gstavvidenc.c
View file

@ -29,6 +29,7 @@
#include <errno.h>
#include <libavcodec/avcodec.h>
#include <libavutil/stereo3d.h>
#include <gst/gst.h>
#include <gst/video/gstvideometa.h>
@ -603,6 +604,31 @@ buffer_info_free (void *opaque, guint8 * data)
g_slice_free (BufferInfo, info);
}
static enum AVStereo3DType
stereo_gst_to_av (GstVideoMultiviewMode mview_mode)
{
switch (mview_mode) {
case GST_VIDEO_MULTIVIEW_MODE_SIDE_BY_SIDE:
return AV_STEREO3D_SIDEBYSIDE;
case GST_VIDEO_MULTIVIEW_MODE_TOP_BOTTOM:
return AV_STEREO3D_TOPBOTTOM;
case GST_VIDEO_MULTIVIEW_MODE_FRAME_BY_FRAME:
return AV_STEREO3D_FRAMESEQUENCE;
case GST_VIDEO_MULTIVIEW_MODE_CHECKERBOARD:
return AV_STEREO3D_CHECKERBOARD;
case GST_VIDEO_MULTIVIEW_MODE_SIDE_BY_SIDE_QUINCUNX:
return AV_STEREO3D_SIDEBYSIDE_QUINCUNX;
case GST_VIDEO_MULTIVIEW_MODE_ROW_INTERLEAVED:
return AV_STEREO3D_LINES;
case GST_VIDEO_MULTIVIEW_MODE_COLUMN_INTERLEAVED:
return AV_STEREO3D_COLUMNS;
default:
break;
}
GST_WARNING ("Unsupported multiview mode - no mapping in libav");
return AV_STEREO3D_2D;
}
static GstFlowReturn
gst_ffmpegvidenc_handle_frame (GstVideoEncoder * encoder,
GstVideoCodecFrame * frame)
@ -622,6 +648,16 @@ gst_ffmpegvidenc_handle_frame (GstVideoEncoder * encoder,
GST_BUFFER_FLAG_IS_SET (frame->input_buffer, GST_VIDEO_BUFFER_FLAG_TFF);
}
if (GST_VIDEO_INFO_MULTIVIEW_MODE (info) != GST_VIDEO_MULTIVIEW_MODE_NONE) {
AVStereo3D *stereo = av_stereo3d_create_side_data (ffmpegenc->picture);
stereo->type = stereo_gst_to_av (GST_VIDEO_INFO_MULTIVIEW_MODE (info));
if (GST_VIDEO_INFO_MULTIVIEW_FLAGS (info) &
GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_VIEW_FIRST) {
stereo->flags = AV_STEREO3D_FLAG_INVERT;
}
}
if (GST_VIDEO_CODEC_FRAME_IS_FORCE_KEYFRAME (frame))
ffmpegenc->picture->pict_type = AV_PICTURE_TYPE_I;