avformat/movenc: implicitly enable negative CTS offsets for ismv

[ffmpeg] / libavformat / internal.h

diff --git a/libavformat/internal.h b/libavformat/internal.h
index 0cd0556dc799ed50edee70234c189f71277018fd..0b8120b8424659f02a1c9a958648dc9a84c96e21 100644 (file)
--- a/libavformat/internal.h
+++ b/libavformat/internal.h
@@ -239,6 +239,14 @@ void ff_read_frame_flush(AVFormatContext *s);
 /** Get the current time since NTP epoch in microseconds. */
 uint64_t ff_ntp_time(void);
 
+/**
+ * Get the NTP time stamp formatted as per the RFC-5905.
+ *
+ * @param ntp_time NTP time in micro seconds (since NTP epoch)
+ * @return the formatted NTP time stamp
+ */
+uint64_t ff_get_formatted_ntp_time(uint64_t ntp_time_us);
+
 /**
  * Append the media-specific SDP fragment for the media stream c
  * to the buffer buff.
@@ -299,6 +307,42 @@ void ff_put_v(AVIOContext *bc, uint64_t val);
  */
 int ff_get_line(AVIOContext *s, char *buf, int maxlen);
 
+/**
+ * Same as ff_get_line but strip the white-space characters in the text tail
+ *
+ * @param s the read-only AVIOContext
+ * @param buf buffer to store the read line
+ * @param maxlen size of the buffer
+ * @return the length of the string written in the buffer
+ */
+int ff_get_chomp_line(AVIOContext *s, char *buf, int maxlen);
+
+/**
+ * Read a whole line of text from AVIOContext to an AVBPrint buffer. Stop
+ * reading after reaching a \\r, a \\n, a \\r\\n, a \\0 or EOF.  The line
+ * ending characters are NOT included in the buffer, but they are skipped on
+ * the input.
+ *
+ * @param s the read-only AVIOContext
+ * @param bp the AVBPrint buffer
+ * @return the length of the read line, not including the line endings,
+ *         negative on error.
+ */
+int64_t ff_read_line_to_bprint(AVIOContext *s, AVBPrint *bp);
+
+/**
+ * Read a whole line of text from AVIOContext to an AVBPrint buffer overwriting
+ * its contents. Stop reading after reaching a \\r, a \\n, a \\r\\n, a \\0 or
+ * EOF. The line ending characters are NOT included in the buffer, but they
+ * are skipped on the input.
+ *
+ * @param s the read-only AVIOContext
+ * @param bp the AVBPrint buffer
+ * @return the length of the read line not including the line endings,
+ *         negative on error, or if the buffer becomes truncated.
+ */
+int64_t ff_read_line_to_bprint_overwrite(AVIOContext *s, AVBPrint *bp);
+
 #define SPACE_CHARS " \t\r\n"
 
 /**
@@ -554,6 +598,8 @@ static inline int ff_rename(const char *oldpath, const char *newpath, void *logc
  * Allocate extradata with additional AV_INPUT_BUFFER_PADDING_SIZE at end
  * which is always set to 0.
  *
+ * Previously allocated extradata in par will be freed.
+ *
  * @param size size of extradata
  * @return 0 if OK, AVERROR_xxx on error
  */
@@ -696,4 +742,51 @@ int ff_interleaved_peek(AVFormatContext *s, int stream,
 int ff_lock_avformat(void);
 int ff_unlock_avformat(void);
 
+/**
+ * Set AVFormatContext url field to the provided pointer. The pointer must
+ * point to a valid string. The existing url field is freed if necessary. Also
+ * set the legacy filename field to the same string which was provided in url.
+ */
+void ff_format_set_url(AVFormatContext *s, char *url);
+
+#define FF_PACKETLIST_FLAG_REF_PACKET (1 << 0) /**< Create a new reference for the packet instead of
+                                                    transferring the ownership of the existing one to the
+                                                    list. */
+
+/**
+ * Append an AVPacket to the list.
+ *
+ * @param head  List head element
+ * @param tail  List tail element
+ * @param pkt   The packet being appended
+ * @param flags Any combination of FF_PACKETLIST_FLAG_* flags
+ * @return 0 on success, negative AVERROR value on failure. On failure,
+           the list is unchanged
+ */
+int ff_packet_list_put(AVPacketList **head, AVPacketList **tail,
+                       AVPacket *pkt, int flags);
+
+/**
+ * Remove the oldest AVPacket in the list and return it.
+ *
+ * @note The pkt will be overwritten completely. The caller owns the
+ *       packet and must unref it by itself.
+ *
+ * @param head List head element
+ * @param tail List tail element
+ * @param pkt  Pointer to an initialized AVPacket struct
+ */
+int ff_packet_list_get(AVPacketList **head, AVPacketList **tail,
+                       AVPacket *pkt);
+
+/**
+ * Wipe the list and unref all the packets in it.
+ *
+ * @param head List head element
+ * @param tail List tail element
+ */
+void ff_packet_list_free(AVPacketList **head, AVPacketList **tail);
+
+void avpriv_register_devices(const AVOutputFormat * const o[], const AVInputFormat * const i[]);
+
 #endif /* AVFORMAT_INTERNAL_H */