Merge commit '4d686fb7'

* commit '4d686fb7':
  matroskaenc: convert avstream stereo3d side data during encoding

Conflicts:
	libavformat/matroskaenc.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

libavformat/matroskaenc.c

@@ -46,6 +46,7 @@
 #include "libavutil/random_seed.h"
 #include "libavutil/samplefmt.h"
 #include "libavutil/sha.h"
+#include "libavutil/stereo3d.h"
 
 #include "libavcodec/xiph.h"
 #include "libavcodec/mpeg4audio.h"
@@ -693,18 +694,96 @@ static int mkv_write_codecprivate(AVFormatContext *s, AVIOContext *pb,
     return ret;
 }
 
-static int mkv_write_stereo_mode(AVFormatContext *s, AVIOContext *pb, int st_mode,
-                                  int mode)
+
+static int mkv_write_stereo_mode(AVFormatContext *s, AVIOContext *pb,
+                                 AVStream *st, int mode)
 {
-    if ((mode == MODE_WEBM && st_mode > 3 && st_mode != 11)
-        || st_mode >= MATROSKA_VIDEO_STEREO_MODE_COUNT) {
+    int i;
+    int ret = 0;
+    AVDictionaryEntry *tag;
+    MatroskaVideoStereoModeType format = MATROSKA_VIDEO_STEREOMODE_TYPE_NB;
+
+    // convert metadata into proper side data and add it to the stream
+    if ((tag = av_dict_get(st->metadata, "stereo_mode", NULL, 0)) ||
+        (tag = av_dict_get( s->metadata, "stereo_mode", NULL, 0))) {
+        int stereo_mode = atoi(tag->value);
+
+        for (i=0; i<MATROSKA_VIDEO_STEREO_MODE_COUNT; i++)
+            if (!strcmp(tag->value, ff_matroska_video_stereo_mode[i])){
+                stereo_mode = i;
+                break;
+            }
+
+        if (stereo_mode < MATROSKA_VIDEO_STEREOMODE_TYPE_NB &&
+            stereo_mode != 10 && stereo_mode != 12) {
+            int ret = ff_mkv_stereo3d_conv(st, stereo_mode);
+            if (ret < 0)
+                return ret;
+        }
+    }
+
+    for (i = 0; i < st->nb_side_data; i++) {
+        AVPacketSideData sd = st->side_data[i];
+        if (sd.type == AV_PKT_DATA_STEREO3D) {
+            AVStereo3D *stereo = (AVStereo3D *)sd.data;
+
+            switch (stereo->type) {
+            case AV_STEREO3D_2D:
+                format = MATROSKA_VIDEO_STEREOMODE_TYPE_MONO;
+                break;
+            case AV_STEREO3D_SIDEBYSIDE:
+                format = (stereo->flags & AV_STEREO3D_FLAG_INVERT)
+                    ? MATROSKA_VIDEO_STEREOMODE_TYPE_RIGHT_LEFT
+                    : MATROSKA_VIDEO_STEREOMODE_TYPE_LEFT_RIGHT;
+                break;
+            case AV_STEREO3D_TOPBOTTOM:
+                format = MATROSKA_VIDEO_STEREOMODE_TYPE_TOP_BOTTOM;
+                if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
+                    format--;
+                break;
+            case AV_STEREO3D_CHECKERBOARD:
+                format = MATROSKA_VIDEO_STEREOMODE_TYPE_CHECKERBOARD_LR;
+                if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
+                    format--;
+                break;
+            case AV_STEREO3D_LINES:
+                format = MATROSKA_VIDEO_STEREOMODE_TYPE_ROW_INTERLEAVED_LR;
+                if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
+                    format--;
+                break;
+            case AV_STEREO3D_COLUMNS:
+                format = MATROSKA_VIDEO_STEREOMODE_TYPE_COL_INTERLEAVED_LR;
+                if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
+                    format--;
+                break;
+            case AV_STEREO3D_FRAMESEQUENCE:
+                format = MATROSKA_VIDEO_STEREOMODE_TYPE_BOTH_EYES_BLOCK_LR;
+                if (stereo->flags & AV_STEREO3D_FLAG_INVERT)
+                    format++;
+                break;
+            }
+            ret = stereo->type;
+
+            break;
+        }
+    }
+
+    if (format == MATROSKA_VIDEO_STEREOMODE_TYPE_NB)
+        return ret;
+
+    if ((mode == MODE_WEBM &&
+        format > MATROSKA_VIDEO_STEREOMODE_TYPE_TOP_BOTTOM &&
+        format != MATROSKA_VIDEO_STEREOMODE_TYPE_RIGHT_LEFT)
+        || format >= MATROSKA_VIDEO_STEREO_MODE_COUNT) {
         av_log(s, AV_LOG_ERROR,
                "The specified stereo mode is not valid.\n");
+        format = MATROSKA_VIDEO_STEREOMODE_TYPE_NB;
         return AVERROR(EINVAL);
-    } else
-        put_ebml_uint(pb, MATROSKA_ID_VIDEOSTEREOMODE, st_mode);
+    }
 
-    return 0;
+    put_ebml_uint(pb, MATROSKA_ID_VIDEOSTEREOMODE, format);
+
+    return ret;
 }
 
 static int mkv_write_track(AVFormatContext *s, MatroskaMuxContext *mkv,
@@ -845,33 +924,21 @@ static int mkv_write_track(AVFormatContext *s, MatroskaMuxContext *mkv,
         put_ebml_uint (pb, MATROSKA_ID_VIDEOPIXELWIDTH , codec->width);
         put_ebml_uint (pb, MATROSKA_ID_VIDEOPIXELHEIGHT, codec->height);
 
-        if ((tag = av_dict_get(st->metadata, "stereo_mode", NULL, 0)) ||
-            (tag = av_dict_get( s->metadata, "stereo_mode", NULL, 0))) {
-            int st_mode = MATROSKA_VIDEO_STEREO_MODE_COUNT;
-
-            for (j=0; j<MATROSKA_VIDEO_STEREO_MODE_COUNT; j++)
-                if (!strcmp(tag->value, ff_matroska_video_stereo_mode[j])){
-                    st_mode = j;
-                    break;
-                }
-
-            if (mkv_write_stereo_mode(s, pb, st_mode, mkv->mode) < 0)
-                return AVERROR(EINVAL);
+        // check both side data and metadata for stereo information,
+        // write the result to the bitstream if any is found
+        ret = mkv_write_stereo_mode(s, pb, st, mkv->mode);
+        if (ret < 0)
+            return ret;
 
-            switch (st_mode) {
-            case 1:
-            case 8:
-            case 9:
-            case 11:
-                display_width_div = 2;
-                break;
-            case 2:
-            case 3:
-            case 6:
-            case 7:
-                display_height_div = 2;
-                break;
-            }
+        switch (ret) {
+        case AV_STEREO3D_SIDEBYSIDE:
+        case AV_STEREO3D_COLUMNS:
+            display_width_div = 2;
+            break;
+        case AV_STEREO3D_TOPBOTTOM:
+        case AV_STEREO3D_LINES:
+            display_height_div = 2;
+            break;
         }
 
         if (((tag = av_dict_get(st->metadata, "alpha_mode", NULL, 0)) && atoi(tag->value)) ||