mpegvideo_enc: export vbv_delay in side data

[ffmpeg] / libavcodec / avcodec.h

diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 5ed13de81ca14261d3df87e11997aea3ae7e4998..64328c80ea783114be151e9fbddebcd73fc8934d 100644 (file)
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -1036,6 +1036,44 @@ typedef struct AVPanScan{
     int16_t position[3][2];
 }AVPanScan;
 
+/**
+ * This structure describes the bitrate properties of an encoded bitstream. It
+ * roughly corresponds to a subset the VBV parameters for MPEG-2 or HRD
+ * parameters for H.264/HEVC.
+ */
+typedef struct AVCPBProperties {
+    /**
+     * Maximum bitrate of the stream, in bits per second.
+     * Zero if unknown or unspecified.
+     */
+    int max_bitrate;
+    /**
+     * Minimum bitrate of the stream, in bits per second.
+     * Zero if unknown or unspecified.
+     */
+    int min_bitrate;
+    /**
+     * Average bitrate of the stream, in bits per second.
+     * Zero if unknown or unspecified.
+     */
+    int avg_bitrate;
+
+    /**
+     * The size of the buffer to which the ratecontrol is applied, in bits.
+     * Zero if unknown or unspecified.
+     */
+    int buffer_size;
+
+    /**
+     * The delay between the time the packet this structure is associated with
+     * is received and the time when it should be decoded, in periods of a 27MHz
+     * clock.
+     *
+     * UINT64_MAX when unknown or unspecified.
+     */
+    uint64_t vbv_delay;
+} AVCPBProperties;
+
 #if FF_API_QSCALE_TYPE
 #define FF_QSCALE_TYPE_MPEG1 0
 #define FF_QSCALE_TYPE_MPEG2 1
@@ -1137,6 +1175,11 @@ enum AVPacketSideDataType {
      * e.g. no decoder available for codec.
      */
     AV_PKT_DATA_FALLBACK_TRACK,
+
+    /**
+     * This side data corresponds to the AVCPBProperties struct.
+     */
+    AV_PKT_DATA_CPB_PROPERTIES,
 };
 
 typedef struct AVPacketSideData {
@@ -2871,13 +2914,18 @@ typedef struct AVCodecContext {
     int error_rate;
 #endif
 
+#if FF_API_VBV_DELAY
     /**
      * VBV delay coded in the last frame (in periods of a 27 MHz clock).
      * Used for compliant TS muxing.
      * - encoding: Set by libavcodec.
      * - decoding: unused.
+     * @deprecated this value is now exported as a part of
+     * AV_PKT_DATA_CPB_PROPERTIES packet side data
      */
+    attribute_deprecated
     uint64_t vbv_delay;
+#endif
 
 #if FF_API_SIDEDATA_ONLY_PKT
     /**
@@ -2925,6 +2973,16 @@ typedef struct AVCodecContext {
      * - decoding: Set by libavcodec before calling get_format()
      */
     enum AVPixelFormat sw_pix_fmt;
+
+    /**
+     * Additional data associated with the entire coded stream.
+     *
+     * - decoding: unused
+     * - encoding: may be set by libavcodec after avcodec_open2().
+     */
+    AVPacketSideData *coded_side_data;
+    int            nb_coded_side_data;
+
 } AVCodecContext;
 
 /**
@@ -4620,6 +4678,17 @@ const AVCodecDescriptor *avcodec_descriptor_next(const AVCodecDescriptor *prev);
  */
 const AVCodecDescriptor *avcodec_descriptor_get_by_name(const char *name);
 
+/**
+ * Allocate a CPB properties structure and initialize its fields to default
+ * values.
+ *
+ * @param size if non-NULL, the size of the allocated struct will be written
+ *             here. This is useful for embedding it in side data.
+ *
+ * @return the newly allocated struct or NULL on failure
+ */
+AVCPBProperties *av_cpb_properties_alloc(size_t *size);
+
 /**
  * @}
  */