#ifndef AVFORMAT_AVFORMAT_H
#define AVFORMAT_AVFORMAT_H
-#define LIBAVFORMAT_VERSION_MAJOR 52
-#define LIBAVFORMAT_VERSION_MINOR 82
-#define LIBAVFORMAT_VERSION_MICRO 0
-
-#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
- LIBAVFORMAT_VERSION_MINOR, \
- LIBAVFORMAT_VERSION_MICRO)
-#define LIBAVFORMAT_VERSION AV_VERSION(LIBAVFORMAT_VERSION_MAJOR, \
- LIBAVFORMAT_VERSION_MINOR, \
- LIBAVFORMAT_VERSION_MICRO)
-#define LIBAVFORMAT_BUILD LIBAVFORMAT_VERSION_INT
-
-#define LIBAVFORMAT_IDENT "Lavf" AV_STRINGIFY(LIBAVFORMAT_VERSION)
-
-/**
- * Those FF_API_* defines are not part of public API.
- * They may change, break or disappear at any time.
- */
-#ifndef FF_API_MAX_STREAMS
-#define FF_API_MAX_STREAMS (LIBAVFORMAT_VERSION_MAJOR < 53)
-#endif
-#ifndef FF_API_OLD_METADATA
-#define FF_API_OLD_METADATA (LIBAVFORMAT_VERSION_MAJOR < 53)
-#endif
-#ifndef FF_API_URL_CLASS
-#define FF_API_URL_CLASS (LIBAVFORMAT_VERSION_MAJOR >= 53)
-#endif
-#ifndef FF_API_URL_RESETBUF
-#define FF_API_URL_RESETBUF (LIBAVFORMAT_VERSION_MAJOR < 53)
-#endif
-#ifndef FF_API_REGISTER_PROTOCOL
-#define FF_API_REGISTER_PROTOCOL (LIBAVFORMAT_VERSION_MAJOR < 53)
-#endif
-#ifndef FF_API_GUESS_FORMAT
-#define FF_API_GUESS_FORMAT (LIBAVFORMAT_VERSION_MAJOR < 53)
-#endif
-#ifndef FF_API_UDP_GET_FILE
-#define FF_API_UDP_GET_FILE (LIBAVFORMAT_VERSION_MAJOR < 53)
-#endif
-#ifndef FF_API_URL_SPLIT
-#define FF_API_URL_SPLIT (LIBAVFORMAT_VERSION_MAJOR < 53)
-#endif
-#ifndef FF_API_ALLOC_FORMAT_CONTEXT
-#define FF_API_ALLOC_FORMAT_CONTEXT (LIBAVFORMAT_VERSION_MAJOR < 53)
-#endif
-#ifndef FF_API_PARSE_FRAME_PARAM
-#define FF_API_PARSE_FRAME_PARAM (LIBAVFORMAT_VERSION_MAJOR < 53)
-#endif
/**
* I return the LIBAVFORMAT_VERSION_INT constant. You got
#include "libavcodec/avcodec.h"
#include "avio.h"
+#include "libavformat/version.h"
struct AVFormatContext;
* sorting will have '-sort' appended. E.g. artist="The Beatles",
* artist-sort="Beatles, The".
*
- * 4. Tag names are normally exported exactly as stored in the container to
- * allow lossless remuxing to the same format. For container-independent
- * handling of metadata, av_metadata_conv() can convert it to ffmpeg generic
- * format. Follows a list of generic tag names:
+ * 4. Demuxers attempt to export metadata in a generic format, however tags
+ * with no generic equivalents are left as they are stored in the container.
+ * Follows a list of generic tag names:
*
* album -- name of the set this work belongs to
* album_artist -- main creator of the set/album, if different from artist.
* comment -- any additional description of the file.
* composer -- who composed the work, if different from artist.
* copyright -- name of copyright holder.
+ * creation_time-- date when the file was created, preferably in ISO 8601.
* date -- date when the work was created, preferably in ISO 8601.
* disc -- number of a subset, e.g. disc in a multi-disc collection.
* encoder -- name/settings of the software/hardware that produced the file.
* E.g for "Also sprach Zarathustra", artist would be "Richard
* Strauss" and performer "London Philharmonic Orchestra".
* publisher -- name of the label/publisher.
+ * service_name -- name of the service in broadcasting (channel name).
+ * service_provider -- name of the service provider in broadcasting.
* title -- name of the work.
* track -- number of this work in the set, can be in form current/total.
*/
}AVMetadataTag;
typedef struct AVMetadata AVMetadata;
+#if FF_API_OLD_METADATA
typedef struct AVMetadataConv AVMetadataConv;
+#endif
/**
* Get a metadata element with matching key.
*/
int av_metadata_set2(AVMetadata **pm, const char *key, const char *value, int flags);
+#if FF_API_OLD_METADATA
/**
- * Convert all the metadata sets from ctx according to the source and
- * destination conversion tables. If one of the tables is NULL, then
- * tags are converted to/from ffmpeg generic tag names.
- *
- * @param d_conv destination tags format conversion table
- * @param s_conv source tags format conversion table
+ * This function is provided for compatibility reason and currently does nothing.
*/
-void av_metadata_conv(struct AVFormatContext *ctx, const AVMetadataConv *d_conv,
- const AVMetadataConv *s_conv);
+attribute_deprecated void av_metadata_conv(struct AVFormatContext *ctx, const AVMetadataConv *d_conv,
+ const AVMetadataConv *s_conv);
+#endif
+
+/**
+ * Copy metadata from one AVMetadata struct into another.
+ * @param dst pointer to a pointer to a AVMetadata struct. If *dst is NULL,
+ * this function will allocate a struct for you and put it in *dst
+ * @param src pointer to source AVMetadata struct
+ * @param flags flags to use when setting metadata in *dst
+ * @note metadata is read using the AV_METADATA_IGNORE_SUFFIX flag
+ */
+void av_metadata_copy(AVMetadata **dst, AVMetadata *src, int flags);
/**
* Free all the memory allocated for an AVMetadata struct.
int av_get_packet(ByteIOContext *s, AVPacket *pkt, int size);
+/**
+ * Read data and append it to the current content of the AVPacket.
+ * If pkt->size is 0 this is identical to av_get_packet.
+ * Note that this uses av_grow_packet and thus involves a realloc
+ * which is inefficient. Thus this function should only be used
+ * when there is no reasonable way to know (an upper bound of)
+ * the final size.
+ *
+ * @param pkt packet
+ * @param size amount of data to read
+ * @return >0 (read size) if OK, AVERROR_xxx otherwise, previous data
+ * will not be lost even if an error occurs.
+ */
+int av_append_packet(ByteIOContext *s, AVPacket *pkt, int size);
+
/*************************************************/
/* fractional numbers for exact pts handling */
unsigned int initial_pause:1; /**< Do not begin to play the stream
immediately (RTSP only). */
unsigned int prealloced_context:1;
-#if LIBAVFORMAT_VERSION_INT < (53<<16)
+#if FF_API_PARAMETERS_CODEC_ID
attribute_deprecated enum CodecID video_codec_id;
attribute_deprecated enum CodecID audio_codec_id;
#endif
#define AVFMT_GLOBALHEADER 0x0040 /**< Format wants global header. */
#define AVFMT_NOTIMESTAMPS 0x0080 /**< Format does not need / have any timestamps. */
#define AVFMT_GENERIC_INDEX 0x0100 /**< Use generic index building code. */
-#define AVFMT_TS_DISCONT 0x0200 /**< Format allows timestamp discontinuities. */
+#define AVFMT_TS_DISCONT 0x0200 /**< Format allows timestamp discontinuities. Note, muxers always require valid (monotone) timestamps */
#define AVFMT_VARIABLE_FPS 0x0400 /**< Format allows variable fps. */
#define AVFMT_NODIMENSIONS 0x0800 /**< Format does not need width/height */
+#define AVFMT_NOSTREAMS 0x1000 /**< Format does not require any streams */
typedef struct AVOutputFormat {
const char *name;
enum CodecID subtitle_codec; /**< default subtitle codec */
+#if FF_API_OLD_METADATA
const AVMetadataConv *metadata_conv;
+#endif
+
+ const AVClass *priv_class; ///< AVClass for the private context
/* private fields */
struct AVOutputFormat *next;
*/
int (*read_close)(struct AVFormatContext *);
-#if LIBAVFORMAT_VERSION_MAJOR < 53
+#if FF_API_READ_SEEK
/**
* Seek to a given timestamp relative to the frames in
* stream component stream_index.
*/
int (*read_seek2)(struct AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags);
+#if FF_API_OLD_METADATA
const AVMetadataConv *metadata_conv;
+#endif
/* private fields */
struct AVInputFormat *next;
int64_t nb_frames; ///< number of frames in this stream if known or 0
-#if LIBAVFORMAT_VERSION_INT < (53<<16)
+#if FF_API_LAVF_UNUSED
attribute_deprecated int64_t unused[4+1];
#endif
/* av_read_frame() support */
AVStream *cur_st;
-#if LIBAVFORMAT_VERSION_INT < (53<<16)
+#if FF_API_LAVF_UNUSED
const uint8_t *cur_ptr_deprecated;
int cur_len_deprecated;
AVPacket cur_pkt_deprecated;
struct AVPacketList *next;
} AVPacketList;
-#if LIBAVFORMAT_VERSION_INT < (53<<16)
+#if FF_API_FIRST_FORMAT
attribute_deprecated extern AVInputFormat *first_iformat;
attribute_deprecated extern AVOutputFormat *first_oformat;
#endif
*/
AVInputFormat *av_probe_input_format2(AVProbeData *pd, int is_opened, int *score_max);
+/**
+ * Probe a bytestream to determine the input format. Each time a probe returns
+ * with a score that is too low, the probe buffer size is increased and another
+ * attempt is made. When the maximum probe size is reached, the input format
+ * with the highest score is returned.
+ *
+ * @param pb the bytestream to probe
+ * @param fmt the input format is put here
+ * @param filename the filename of the stream
+ * @param logctx the log context
+ * @param offset the offset within the bytestream to probe from
+ * @param max_probe_size the maximum probe buffer size (zero for default)
+ * @return 0 in case of success, a negative value corresponding to an
+ * AVERROR code otherwise
+ */
+int av_probe_input_buffer(ByteIOContext *pb, AVInputFormat **fmt,
+ const char *filename, void *logctx,
+ unsigned int offset, unsigned int max_probe_size);
+
/**
* Allocate all the structures needed to read an input stream.
* This does not open the needed codecs for decoding the stream[s].
/**
* Allocate an AVFormatContext.
- * Can be freed with av_free() but do not forget to free everything you
- * explicitly allocated as well!
+ * avformat_free_context() can be used to free the context and everything
+ * allocated by the framework within it.
*/
AVFormatContext *avformat_alloc_context(void);
*/
int av_find_stream_info(AVFormatContext *ic);
+/**
+ * Find the "best" stream in the file.
+ * The best stream is determined according to various heuristics as the most
+ * likely to be what the user expects.
+ * If the decoder parameter is non-NULL, av_find_best_stream will find the
+ * default decoder for the stream's codec; streams for which no decoder can
+ * be found are ignored.
+ *
+ * @param ic media file handle
+ * @param type stream type: video, audio, subtitles, etc.
+ * @param wanted_stream_nb user-requested stream number,
+ * or -1 for automatic selection
+ * @param related_stream try to find a stream related (eg. in the same
+ * program) to this one, or -1 if none
+ * @param decoder_ret if non-NULL, returns the decoder for the
+ * selected stream
+ * @param flags flags; none are currently defined
+ * @return the non-negative stream number in case of success,
+ * AVERROR_STREAM_NOT_FOUND if no stream with the requested type
+ * could be found,
+ * AVERROR_DECODER_NOT_FOUND if streams were found but no decoder
+ * @note If av_find_best_stream returns successfully and decoder_ret is not
+ * NULL, then *decoder_ret is guaranteed to be set to a valid AVCodec.
+ */
+int av_find_best_stream(AVFormatContext *ic,
+ enum AVMediaType type,
+ int wanted_stream_nb,
+ int related_stream,
+ AVCodec **decoder_ret,
+ int flags);
+
/**
* Read a transport packet from a media file.
*
*/
void av_close_input_file(AVFormatContext *s);
+/**
+ * Free an AVFormatContext and all its streams.
+ * @param s context to free
+ */
+void avformat_free_context(AVFormatContext *s);
+
/**
* Add a new stream to a media file.
*
AVProgram *av_new_program(AVFormatContext *s, int id);
/**
- * Add a new chapter.
- * This function is NOT part of the public API
- * and should ONLY be used by demuxers.
- *
- * @param s media file handle
- * @param id unique ID for this chapter
- * @param start chapter start time in time_base units
- * @param end chapter end time in time_base units
- * @param title chapter title
- *
- * @return AVChapter or NULL on error
- */
-AVChapter *ff_new_chapter(AVFormatContext *s, int id, AVRational time_base,
- int64_t start, int64_t end, const char *title);
-
-/**
- * Set the pts for a given stream.
+ * Set the pts for a given stream. If the new values would be invalid
+ * (<= 0), it leaves the AVStream unchanged.
*
* @param s stream
* @param pts_wrap_bits number of bits effectively used by the pts
*/
int av_index_search_timestamp(AVStream *st, int64_t timestamp, int flags);
-/**
- * Ensure the index uses less memory than the maximum specified in
- * AVFormatContext.max_index_size by discarding entries if it grows
- * too large.
- * This function is not part of the public API and should only be called
- * by demuxers.
- */
-void ff_reduce_index(AVFormatContext *s, int stream_index);
-
/**
* Add an index entry into a sorted list. Update the entry if the list
* already contains it.
projects / ffmpeg / blobdiff