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avviddec: Map any stereo3D info to multiview modes

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Map any libav Stereo3D side data to GStreamer multiview
mode / flags for playback.

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 887e45e6cc
commit 8e6fbe7f63
2 changed files with 64 additions and 8 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

68
ext/libav/gstavviddec.c
View file

@ -25,6 +25,7 @@
#include <string.h>
#include <libavcodec/avcodec.h>
#include <libavutil/stereo3d.h>
#include <gst/gst.h>
#include <gst/video/video.h>
@ -442,6 +443,8 @@ gst_ffmpegviddec_set_format (GstVideoDecoder * decoder,
ffmpegdec->ctx_ticks = 0;
ffmpegdec->ctx_time_n = 0;
ffmpegdec->ctx_time_d = 0;
ffmpegdec->cur_multiview_mode = GST_VIDEO_MULTIVIEW_MODE_NONE;
ffmpegdec->cur_multiview_flags = GST_VIDEO_MULTIVIEW_FLAGS_NONE;
}
gst_caps_replace (&ffmpegdec->last_caps, state->caps);
@ -902,7 +905,9 @@ picture_changed (GstFFMpegVidDec * ffmpegdec, AVFrame * picture)
&& ffmpegdec->pic_par_n == picture->sample_aspect_ratio.num
&& ffmpegdec->pic_par_d == picture->sample_aspect_ratio.den
&& ffmpegdec->pic_interlaced == picture->interlaced_frame
&& ffmpegdec->pic_field_order == pic_field_order);
&& ffmpegdec->pic_field_order == pic_field_order
&& ffmpegdec->cur_multiview_mode == ffmpegdec->picture_multiview_mode
&& ffmpegdec->cur_multiview_flags == ffmpegdec->picture_multiview_flags);
}
static gboolean
@ -946,6 +951,8 @@ update_video_context (GstFFMpegVidDec * ffmpegdec, AVCodecContext * context,
ffmpegdec->pic_height = picture->height;
ffmpegdec->pic_par_n = picture->sample_aspect_ratio.num;
ffmpegdec->pic_par_d = picture->sample_aspect_ratio.den;
ffmpegdec->cur_multiview_mode = ffmpegdec->picture_multiview_mode;
ffmpegdec->cur_multiview_flags = ffmpegdec->picture_multiview_flags;
/* Remember if we have interlaced content and the field order changed
* at least once. If that happens, we must be interlace-mode=mixed
@ -1042,6 +1049,31 @@ no_par:
}
}
static GstVideoMultiviewMode
stereo_av_to_gst (enum AVStereo3DType type)
{
switch (type) {
case AV_STEREO3D_SIDEBYSIDE:
return GST_VIDEO_MULTIVIEW_MODE_SIDE_BY_SIDE;
case AV_STEREO3D_TOPBOTTOM:
return GST_VIDEO_MULTIVIEW_MODE_TOP_BOTTOM;
case AV_STEREO3D_FRAMESEQUENCE:
return GST_VIDEO_MULTIVIEW_MODE_FRAME_BY_FRAME;
case AV_STEREO3D_CHECKERBOARD:
return GST_VIDEO_MULTIVIEW_MODE_CHECKERBOARD;
case AV_STEREO3D_SIDEBYSIDE_QUINCUNX:
return GST_VIDEO_MULTIVIEW_MODE_SIDE_BY_SIDE_QUINCUNX;
case AV_STEREO3D_LINES:
return GST_VIDEO_MULTIVIEW_MODE_ROW_INTERLEAVED;
case AV_STEREO3D_COLUMNS:
return GST_VIDEO_MULTIVIEW_MODE_COLUMN_INTERLEAVED;
default:
break;
}
return GST_VIDEO_MULTIVIEW_MODE_NONE;
}
static gboolean
gst_ffmpegviddec_negotiate (GstFFMpegVidDec * ffmpegdec,
AVCodecContext * context, AVFrame * picture)
@ -1240,13 +1272,8 @@ gst_ffmpegviddec_negotiate (GstFFMpegVidDec * ffmpegdec,
/* calculate and update par now */
gst_ffmpegviddec_update_par (ffmpegdec, in_info, out_info);
/* Copy stereo/multiview info from upstream if set */
if (GST_VIDEO_INFO_MULTIVIEW_MODE (in_info) != GST_VIDEO_MULTIVIEW_MODE_NONE) {
GST_VIDEO_INFO_MULTIVIEW_MODE (out_info) =
GST_VIDEO_INFO_MULTIVIEW_MODE (in_info);
GST_VIDEO_INFO_MULTIVIEW_FLAGS (out_info) =
GST_VIDEO_INFO_MULTIVIEW_FLAGS (in_info);
}
GST_VIDEO_INFO_MULTIVIEW_MODE (out_info) = ffmpegdec->cur_multiview_mode;
GST_VIDEO_INFO_MULTIVIEW_FLAGS (out_info) = ffmpegdec->cur_multiview_flags;
if (!gst_video_decoder_negotiate (GST_VIDEO_DECODER (ffmpegdec)))
goto negotiate_failed;
@ -1522,6 +1549,31 @@ gst_ffmpegviddec_video_frame (GstFFMpegVidDec * ffmpegdec,
gst_buffer_replace (&out_frame->output_buffer, out_dframe->buffer);
gst_buffer_replace (&out_dframe->buffer, NULL);
/* Extract auxilliary info not stored in the main AVframe */
{
GstVideoInfo *in_info = &ffmpegdec->input_state->info;
/* Take multiview mode from upstream if present */
ffmpegdec->picture_multiview_mode = GST_VIDEO_INFO_MULTIVIEW_MODE (in_info);
ffmpegdec->picture_multiview_flags =
GST_VIDEO_INFO_MULTIVIEW_FLAGS (in_info);
/* Otherwise, see if there's info in the frame */
if (ffmpegdec->picture_multiview_mode == GST_VIDEO_MULTIVIEW_MODE_NONE) {
AVFrameSideData *side_data =
av_frame_get_side_data (ffmpegdec->picture, AV_FRAME_DATA_STEREO3D);
if (side_data) {
AVStereo3D *stereo = (AVStereo3D *) side_data->data;
ffmpegdec->picture_multiview_mode = stereo_av_to_gst (stereo->type);
if (stereo->flags & AV_STEREO3D_FLAG_INVERT) {
ffmpegdec->picture_multiview_flags =
GST_VIDEO_MULTIVIEW_FLAGS_RIGHT_VIEW_FIRST;
} else {
ffmpegdec->picture_multiview_flags = GST_VIDEO_MULTIVIEW_FLAGS_NONE;
}
}
}
}
GST_DEBUG_OBJECT (ffmpegdec,
"pts %" G_GUINT64_FORMAT " duration %" G_GUINT64_FORMAT,
out_frame->pts, out_frame->duration);

4
ext/libav/gstavviddec.h
View file

@ -37,6 +37,8 @@ struct _GstFFMpegVidDec
/* decoding */
AVCodecContext *context;
AVFrame *picture;
GstVideoMultiviewMode picture_multiview_mode;
GstVideoMultiviewFlags picture_multiview_flags;
gint stride[AV_NUM_DATA_POINTERS];
gboolean opened;
@ -50,6 +52,8 @@ struct _GstFFMpegVidDec
/* GST_VIDEO_BUFFER_FLAG_RFF | GST_VIDEO_BUFFER_FLAG_TFF */
gint pic_field_order;
gboolean pic_field_order_changed;
GstVideoMultiviewMode cur_multiview_mode;
GstVideoMultiviewFlags cur_multiview_flags;
/* current context */
gint ctx_ticks;
gint ctx_time_d;