* sorting will have '-sort' appended. E.g. artist="The Beatles",
* artist-sort="Beatles, The".
* - Some protocols and demuxers support metadata updates. After a successful
- * call to av_read_packet(), AVFormatContext.event_flags or AVStream.event_flags
+ * call to av_read_frame(), AVFormatContext.event_flags or AVStream.event_flags
* will be updated to indicate if metadata changed. In order to detect metadata
* changes on a stream, you need to loop through all streams in the AVFormatContext
* and check their individual event_flags.
#else
#define ff_const59 const
#endif
+#if FF_API_NEXT
ff_const59 struct AVOutputFormat *next;
+#endif
/**
* size of private data so that it can be allocated in the wrapper
*/
* New public fields should be added right above.
*****************************************************************
*/
+#if FF_API_NEXT
ff_const59 struct AVInputFormat *next;
+#endif
/**
* Raw demuxers store their codec ID here.
int nb_side_data;
/**
- * Flags for the user to detect events happening on the stream. Flags must
- * be cleared by the user once the event has been handled.
- * A combination of AVSTREAM_EVENT_FLAG_*.
+ * Flags indicating events happening on the stream, a combination of
+ * AVSTREAM_EVENT_FLAG_*.
+ *
+ * - demuxing: may be set by the demuxer in avformat_open_input(),
+ * avformat_find_stream_info() and av_read_frame(). Flags must be cleared
+ * by the user once the event has been handled.
+ * - muxing: may be set by the user after avformat_write_header(). to
+ * indicate a user-triggered event. The muxer will clear the flags for
+ * events it has handled in av_[interleaved]_write_frame().
*/
int event_flags;
-#define AVSTREAM_EVENT_FLAG_METADATA_UPDATED 0x0001 ///< The call resulted in updated metadata.
+/**
+ * - demuxing: the demuxer read new metadata from the file and updated
+ * AVStream.metadata accordingly
+ * - muxing: the user updated AVStream.metadata and wishes the muxer to write
+ * it into the file
+ */
+#define AVSTREAM_EVENT_FLAG_METADATA_UPDATED 0x0001
+/**
+ * - demuxing: new packets for this stream were read from the file. This
+ * event is informational only and does not guarantee that new packets
+ * for this stream will necessarily be returned from av_read_frame().
+ */
+#define AVSTREAM_EVENT_FLAG_NEW_PACKETS (1 << 1)
/**
* Real base framerate of the stream.
*****************************************************************
*/
-#define MAX_STD_TIMEBASES (30*12+30+3+6)
- /**
- * Stream information used internally by avformat_find_stream_info()
- */
- struct {
- int64_t last_dts;
- int64_t duration_gcd;
- int duration_count;
- int64_t rfps_duration_sum;
- double (*duration_error)[2][MAX_STD_TIMEBASES];
- int64_t codec_info_duration;
- int64_t codec_info_duration_fields;
- int frame_delay_evidence;
-
- /**
- * 0 -> decoder has not been searched for yet.
- * >0 -> decoder found
- * <0 -> decoder with codec_id == -found_decoder has not been found
- */
- int found_decoder;
-
- int64_t last_duration;
-
- /**
- * 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;
+#if LIBAVFORMAT_VERSION_MAJOR < 59
+ // kept for ABI compatibility only, do not access in any way
+ void *unused;
+#endif
int pts_wrap_bits; /**< number of bits in pts (used for wrapping control) */
* -1 -> probing finished
* 0 -> no probing requested
* rest -> perform probing with request_probe being the minimum score to accept.
- * NOT PART OF PUBLIC API
*/
int request_probe;
/**
*/
int64_t last_discard_sample;
- /**
- * Number of internally decoded frames, used internally in libavformat, do not access
- * its lifetime differs from info which is why it is not in that structure.
- */
- int nb_decoded_frames;
-
- /**
- * Timestamp offset added to timestamps before muxing
- * NOT PART OF PUBLIC API
- */
- int64_t mux_ts_offset;
-
- /**
- * Internal data to check for wrapping of the time stamp
- */
- int64_t pts_wrap_reference;
-
- /**
- * Options for behavior, when a wrap is detected.
- *
- * Defined by AV_PTS_WRAP_ values.
- *
- * If correction is enabled, there are two possibilities:
- * If the first time stamp is near the wrap point, the wrap offset
- * will be subtracted, which will create negative time stamps.
- * Otherwise the offset will be added.
- */
- int pts_wrap_behavior;
-
- /**
- * Internal data to prevent doing update_initial_durations() twice
- */
- int update_initial_durations_done;
-
- /**
- * Internal data to generate dts from pts
- */
- int64_t pts_reorder_error[MAX_REORDER_DELAY+1];
- uint8_t pts_reorder_error_count[MAX_REORDER_DELAY+1];
-
- /**
- * Internal data to analyze DTS and detect faulty mpeg streams
- */
- int64_t last_dts_for_order_check;
- uint8_t dts_ordered;
- uint8_t dts_misordered;
-
- /**
- * Internal data to inject global side data
- */
- int inject_global_side_data;
-
- /**
- * display aspect ratio (0 if unknown)
- * - encoding: unused
- * - decoding: Set by libavformat to calculate sample_aspect_ratio internally
- */
- AVRational display_aspect_ratio;
-
/**
* An opaque field for libavformat internal usage.
* Must not be accessed in any way by callers.
int strict_std_compliance;
/**
- * Flags for the user to detect events happening on the file. Flags must
- * be cleared by the user once the event has been handled.
- * A combination of AVFMT_EVENT_FLAG_*.
+ * Flags indicating events happening on the file, a combination of
+ * AVFMT_EVENT_FLAG_*.
+ *
+ * - demuxing: may be set by the demuxer in avformat_open_input(),
+ * avformat_find_stream_info() and av_read_frame(). Flags must be cleared
+ * by the user once the event has been handled.
+ * - muxing: may be set by the user after avformat_write_header() to
+ * indicate a user-triggered event. The muxer will clear the flags for
+ * events it has handled in av_[interleaved]_write_frame().
*/
int event_flags;
-#define AVFMT_EVENT_FLAG_METADATA_UPDATED 0x0001 ///< The call resulted in updated metadata.
+/**
+ * - demuxing: the demuxer read new metadata from the file and updated
+ * AVFormatContext.metadata accordingly
+ * - muxing: the user updated AVFormatContext.metadata and wishes the muxer to
+ * write it into the file
+ */
+#define AVFMT_EVENT_FLAG_METADATA_UPDATED 0x0001
/**
* Maximum number of packets to read while waiting for the first timestamp.
*/
enum AVDurationEstimationMethod av_fmt_ctx_get_duration_estimation_method(const AVFormatContext* ctx);
-typedef struct AVPacketList {
- AVPacket pkt;
- struct AVPacketList *next;
-} AVPacketList;
-
-
/**
* @defgroup lavf_core Core functions
* @ingroup libavf
*
* @param stream stream
* @param type desired side information type
- * @param size pointer for side information size to store (optional)
+ * @param size If supplied, *size will be set to the size of the side data
+ * or to zero if the desired side data is not present.
* @return pointer to data if present or NULL otherwise
*/
uint8_t *av_stream_get_side_data(const AVStream *stream,
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