avcodec: add a Producer Reference Time AVPacketSideData type

Signed-off-by: James Almer <jamrial@gmail.com>

doc/APIchanges

@@ -15,6 +15,9 @@ libavutil:     2017-10-21
 
 API changes, most recent first:
 
+2020-01-15 - xxxxxxxxxx - lavc 58.66.100 - avcodec.h
+  Add AV_PKT_DATA_PRFT and AVProducerReferenceTime.
+
 2019-12-27 - xxxxxxxxxx - lavu 56.38.100 - eval.h
   Add av_expr_count_func().
 

libavcodec/avcodec.h

@@ -1176,6 +1176,11 @@ typedef struct AVCPBProperties {
     uint64_t vbv_delay;
 } AVCPBProperties;
 
+typedef struct AVProducerReferenceTime {
+    int64_t wallclock;
+    int flags;
+} AVProducerReferenceTime;
+
 /**
  * The decoder will keep a reference to the frame and may reuse it later.
  */
@@ -1410,6 +1415,11 @@ enum AVPacketSideDataType {
      */
     AV_PKT_DATA_AFD,
 
+    /**
+     * Producer Reference Time data corresponding to the AVProducerReferenceTime struct.
+     */
+    AV_PKT_DATA_PRFT,
+
     /**
      * The number of side data types.
      * This is not part of the public API/ABI in the sense that it may

libavcodec/avpacket.c

@@ -741,3 +741,25 @@ int ff_side_data_set_encoder_stats(AVPacket *pkt, int quality, int64_t *error, i
 
     return 0;
 }
+
+int ff_side_data_set_prft(AVPacket *pkt, int64_t timestamp)
+{
+    AVProducerReferenceTime *prft;
+    uint8_t *side_data;
+    int side_data_size;
+
+    side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_PRFT, &side_data_size);
+    if (!side_data) {
+        side_data_size = sizeof(AVProducerReferenceTime);
+        side_data = av_packet_new_side_data(pkt, AV_PKT_DATA_PRFT, side_data_size);
+    }
+
+    if (!side_data || side_data_size < sizeof(AVProducerReferenceTime))
+        return AVERROR(ENOMEM);
+
+    prft = (AVProducerReferenceTime *)side_data;
+    prft->wallclock = timestamp;
+    prft->flags = 0;
+
+    return 0;
+}

libavcodec/internal.h

@@ -392,6 +392,8 @@ AVCPBProperties *ff_add_cpb_side_data(AVCodecContext *avctx);
 
 int ff_side_data_set_encoder_stats(AVPacket *pkt, int quality, int64_t *error, int error_count, int pict_type);
 
+int ff_side_data_set_prft(AVPacket *pkt, int64_t timestamp);
+
 /**
  * Check AVFrame for A53 side data and allocate and fill SEI message with A53 info
  *

libavcodec/version.h

@@ -28,8 +28,8 @@
 #include "libavutil/version.h"
 
 #define LIBAVCODEC_VERSION_MAJOR  58
-#define LIBAVCODEC_VERSION_MINOR  65
-#define LIBAVCODEC_VERSION_MICRO 103
+#define LIBAVCODEC_VERSION_MINOR  66
+#define LIBAVCODEC_VERSION_MICRO 100
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
                                                LIBAVCODEC_VERSION_MINOR, \