h264: add frame packing as stereo_mode frame metadata

This matches the matroska defintion of stereo_mode, with
no metadata written if no info exist in sei

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

1 files changed, 35 insertions, 1 deletions

diff --git a/libavcodec/h264.h b/libavcodec/h264.h
index ed07ad6778..b2365bce83 100644
--- a/libavcodec/h264.h
+++ b/libavcodec/h264.h
@@ -127,7 +127,8 @@ typedef enum {
     SEI_TYPE_PIC_TIMING             = 1,   ///< picture timing
     SEI_TYPE_USER_DATA_ITU_T_T35    = 4,   ///< user data registered by ITU-T Recommendation T.35
     SEI_TYPE_USER_DATA_UNREGISTERED = 5,   ///< unregistered user data
-    SEI_TYPE_RECOVERY_POINT         = 6    ///< recovery point (frame # to decoder sync)
+    SEI_TYPE_RECOVERY_POINT         = 6,   ///< recovery point (frame # to decoder sync)
+    SEI_TYPE_FRAME_PACKING          = 45,  ///< frame packing arrangement
 } SEI_Type;
 
 /**
@@ -146,6 +147,19 @@ typedef enum {
 } SEI_PicStructType;
 
 /**
+ * frame_packing_arrangement types
+ */
+typedef enum {
+    SEI_FPA_TYPE_CHECKERBOARD        = 0,
+    SEI_FPA_TYPE_INTERLEAVE_COLUMN   = 1,
+    SEI_FPA_TYPE_INTERLEAVE_ROW      = 2,
+    SEI_FPA_TYPE_SIDE_BY_SIDE        = 3,
+    SEI_FPA_TYPE_TOP_BOTTOM          = 4,
+    SEI_FPA_TYPE_INTERLEAVE_TEMPORAL = 5,
+    SEI_FPA_TYPE_2D                  = 6,
+} SEI_FpaType;
+
+/**
  * Sequence parameter set
  */
 typedef struct SPS {
@@ -233,6 +247,18 @@ typedef struct PPS {
 } PPS;
 
 /**
+ * Frame Packing Arrangement Type
+ */
+typedef struct FPA {
+    int         frame_packing_arrangement_id;
+    int         frame_packing_arrangement_cancel_flag; ///< is previous arrangement canceled, -1 if never received
+    SEI_FpaType frame_packing_arrangement_type;
+    int         frame_packing_arrangement_repetition_period;
+    int         content_interpretation_type;
+    int         quincunx_sampling_flag;
+} FPA;
+
+/**
  * Memory management control operation opcode.
  */
 typedef enum MMCOOpcode {
@@ -628,6 +654,8 @@ typedef struct H264Context {
      */
     int valid_recovery_point;
 
+    FPA sei_fpa;
+
     int luma_weight_flag[2];    ///< 7.4.3.2 luma_weight_lX_flag
     int chroma_weight_flag[2];  ///< 7.4.3.2 chroma_weight_lX_flag
 
@@ -775,6 +803,12 @@ void ff_h264_filter_mb(H264Context *h, int mb_x, int mb_y,
  */
 void ff_h264_reset_sei(H264Context *h);
 
+/**
+ * Get stereo_mode string from the h264 frame_packing_arrangement
+ * @param h H.264 context.
+ */
+const char* ff_h264_sei_stereo_mode(H264Context *h);
+
 /*
  * o-o o-o
  *  / / /