flvdec: follow packets backward until a valid last timestamp is found

[ffmpeg] / libavformat / avformat.h

diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index 1837733097f326e3ea323b7a421bb79a67516f72..1614646aa5d42279cb3d2f6c750f69387de99c61 100644 (file)
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -578,7 +578,9 @@ enum AVStreamParseType {
     AVSTREAM_PARSE_HEADERS,    /**< Only parse headers, do not repack. */
     AVSTREAM_PARSE_TIMESTAMPS, /**< full parsing and interpolation of timestamps for frames not starting on a packet boundary */
     AVSTREAM_PARSE_FULL_ONCE,  /**< full parsing and repack of the first frame only, only implemented for H.264 currently */
-    AVSTREAM_PARSE_FULL_RAW=MKTAG(0,'R','A','W'),       /**< full parsing and repack with timestamp generation for raw */
+    AVSTREAM_PARSE_FULL_RAW=MKTAG(0,'R','A','W'),       /**< full parsing and repack with timestamp and position generation by parser for raw
+                                                             this assumes that each packet in the file contains no demuxer level headers and
+                                                             just codec level data, otherwise position generaion would fail */
 };
 
 typedef struct AVIndexEntry {
@@ -646,6 +648,7 @@ typedef struct AVStream {
      *             not actually used for encoding.
      */
     AVCodecContext *codec;
+#if FF_API_R_FRAME_RATE
     /**
      * Real base framerate of the stream.
      * This is the lowest framerate with which all timestamps can be
@@ -655,6 +658,7 @@ typedef struct AVStream {
      * approximately 3600 or 1800 timer ticks, then r_frame_rate will be 50/1.
      */
     AVRational r_frame_rate;
+#endif
     void *priv_data;
 
     /**
@@ -739,6 +743,15 @@ typedef struct AVStream {
         int64_t codec_info_duration;
         int nb_decoded_frames;
         int found_decoder;
+
+        /**
+         * Those are used for average framerate estimation.
+         */
+        int64_t fps_first_dts;
+        int     fps_first_dts_idx;
+        int64_t fps_last_dts;
+        int     fps_last_dts_idx;
+
     } *info;
 
     int pts_wrap_bits; /**< number of bits in pts (used for wrapping control) */
@@ -946,6 +959,7 @@ typedef struct AVFormatContext {
 #define AVFMT_FLAG_IGNDTS       0x0008 ///< Ignore DTS on frames that contain both DTS & PTS
 #define AVFMT_FLAG_NOFILLIN     0x0010 ///< Do not infer any values from other values, just return what is stored in the container
 #define AVFMT_FLAG_NOPARSE      0x0020 ///< Do not use AVParsers, you also must set AVFMT_FLAG_NOFILLIN as the fillin code works on frames and no parsing -> no frames. Also seeking to frames can not work if parsing to find frame boundaries has been disabled
+#define AVFMT_FLAG_NOBUFFER     0x0040 ///< Do not buffer frames when possible
 #define AVFMT_FLAG_CUSTOM_IO    0x0080 ///< The caller has supplied a custom AVIOContext, don't avio_close() it.
 #define AVFMT_FLAG_DISCARD_CORRUPT  0x0100 ///< Discard frames marked corrupted
 #define AVFMT_FLAG_MP4A_LATM    0x8000 ///< Enable RTP MP4A-LATM payload
@@ -1953,7 +1967,7 @@ const struct AVCodecTag *avformat_get_riff_audio_tags(void);
  */
 
 /**
- * Guesses the sample aspect ratio of a frame, based on both the stream and the
+ * Guess the sample aspect ratio of a frame, based on both the stream and the
  * frame aspect ratio.
  *
  * Since the frame aspect ratio is set by the codec but the stream aspect ratio