* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#ifndef AVFORMAT_H
-#define AVFORMAT_H
-
-#define LIBAVFORMAT_VERSION_INT ((51<<16)+(13<<8)+3)
-#define LIBAVFORMAT_VERSION 51.13.3
+#ifndef FFMPEG_AVFORMAT_H
+#define FFMPEG_AVFORMAT_H
+
+#define LIBAVFORMAT_VERSION_MAJOR 52
+#define LIBAVFORMAT_VERSION_MINOR 13
+#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)
#include <time.h>
#include <stdio.h> /* FILE */
-#include "avcodec.h"
+#include "libavcodec/avcodec.h"
#include "avio.h"
int height;
enum PixelFormat pix_fmt;
int channel; /**< used to select dv channel */
-#if LIBAVFORMAT_VERSION_INT < (52<<16)
- const char *device; /**< video, audio or DV device */
-#endif
const char *standard; /**< tv standard, NTSC, PAL, SECAM */
int mpeg2ts_raw:1; /**< force raw MPEG2 transport stream output, if possible */
int mpeg2ts_compute_pcr:1; /**< compute exact PCR for each transport
int initial_pause:1; /**< do not begin to play the stream
immediately (RTSP only) */
int prealloced_context:1;
+#if LIBAVFORMAT_VERSION_INT < (53<<16)
enum CodecID video_codec_id;
enum CodecID audio_codec_id;
+#endif
} AVFormatParameters;
//! demuxer will use url_fopen, no opened file should be provided by the caller
/** size of private data so that it can be allocated in the wrapper */
int priv_data_size;
/**
- * tell if a given file has a chance of being parsed by this format.
- * The buffer provided is guranteed to be AVPROBE_PADDING_SIZE bytes big
- * so you dont have to check for that unless you need more.
+ * Tell if a given file has a chance of being parsed by this format.
+ * The buffer provided is guaranteed to be AVPROBE_PADDING_SIZE bytes
+ * big so you do not have to check for that unless you need more.
*/
int (*read_probe)(AVProbeData *);
/** read the format header and initialize the AVFormatContext
int (*read_seek)(struct AVFormatContext *,
int stream_index, int64_t timestamp, int flags);
/**
- * gets the next timestamp in AV_TIME_BASE units.
+ * gets the next timestamp in stream[stream_index].time_base units.
+ * @return the timestamp or AV_NOPTS_VALUE if an error occurred
*/
int64_t (*read_timestamp)(struct AVFormatContext *s, int stream_index,
int64_t *pos, int64_t pos_limit);
int min_distance; /**< min distance between this and the previous keyframe, used to avoid unneeded searching */
} AVIndexEntry;
+#define AV_DISPOSITION_DEFAULT 0x0001
+#define AV_DISPOSITION_DUB 0x0002
+#define AV_DISPOSITION_ORIGINAL 0x0004
+#define AV_DISPOSITION_COMMENT 0x0008
+#define AV_DISPOSITION_LYRICS 0x0010
+#define AV_DISPOSITION_KARAOKE 0x0020
+
+/**
+ * Stream structure.
+ * New fields can be added to the end with minor version bumps.
+ * Removal, reordering and changes to existing fields require a major
+ * version bump.
+ * sizeof(AVStream) must not be used outside libav*.
+ */
typedef struct AVStream {
int index; /**< stream index in AVFormatContext */
int id; /**< format specific stream id */
AVCodecContext *codec; /**< codec context */
/**
- * real base frame rate of the stream.
- * this is the lowest framerate with which all timestamps can be
+ * Real base frame rate of the stream.
+ * This is the lowest frame rate with which all timestamps can be
* represented accurately (it is the least common multiple of all
- * framerates in the stream), Note, this value is just a guess!
- * for example if the timebase is 1/90000 and all frames have either
- * approximately 3600 or 1800 timer ticks then r_frame_rate will be 50/1
+ * frame rates in the stream), Note, this value is just a guess!
+ * For example if the timebase is 1/90000 and all frames have either
+ * approximately 3600 or 1800 timer ticks then r_frame_rate will be 50/1.
*/
AVRational r_frame_rate;
void *priv_data;
/* internal data used in av_find_stream_info() */
int64_t first_dts;
-#if LIBAVFORMAT_VERSION_INT < (52<<16)
- int codec_info_nb_frames;
-#endif
/** encoding: PTS generation when outputing stream */
struct AVFrac pts;
/**
- * this is the fundamental unit of time (in seconds) in terms
- * of which frame timestamps are represented. for fixed-fps content,
- * timebase should be 1/framerate and timestamp increments should be
+ * This is the fundamental unit of time (in seconds) in terms
+ * of which frame timestamps are represented. For fixed-fps content,
+ * timebase should be 1/frame rate and timestamp increments should be
* identically 1.
*/
AVRational time_base;
* MN: dunno if that is the right place for it */
float quality;
/**
- * decoding: pts of the first frame of the stream, in stream time base.
- * only set this if you are absolutely 100% sure that the value you set
- * it to really is the pts of the first frame
+ * Decoding: pts of the first frame of the stream, in stream time base.
+ * Only set this if you are absolutely 100% sure that the value you set
+ * it to really is the pts of the first frame.
* This may be undefined (AV_NOPTS_VALUE).
- * @note the ASF header does NOT contain a correct start_time the ASF
- * demuxer must NOT set this
+ * @note The ASF header does NOT contain a correct start_time the ASF
+ * demuxer must NOT set this.
*/
int64_t start_time;
/**
- * decoding: duration of the stream, in stream time base.
+ * Decoding: duration of the stream, in stream time base.
* If a source file does not specify a duration, but does specify
* a bitrate, this value will be estimates from bit rate and file size.
*/
#define MAX_REORDER_DELAY 4
int64_t pts_buffer[MAX_REORDER_DELAY+1];
+
+ char *filename; /**< source filename of the stream */
+
+ int disposition; /**< AV_DISPOSITION_* bitfield */
} AVStream;
+#define AV_PROGRAM_RUNNING 1
+
+/**
+ * New fields can be added to the end with minor version bumps.
+ * Removal, reordering and changes to existing fields require a major
+ * version bump.
+ * sizeof(AVProgram) must not be used outside libav*.
+ */
+typedef struct AVProgram {
+ int id;
+ char *provider_name; ///< Network name for DVB streams
+ char *name; ///< Service name for DVB streams
+ int flags;
+ enum AVDiscard discard; ///< selects which program to discard and which to feed to the caller
+ unsigned int *stream_index;
+ unsigned int nb_stream_indexes;
+} AVProgram;
+
#define AVFMTCTX_NOHEADER 0x0001 /**< signal that no header is present
(streams are added dynamically) */
#define MAX_STREAMS 20
-/* format I/O context */
+/**
+ * format I/O context.
+ * New fields can be added to the end with minor version bumps.
+ * Removal, reordering and changes to existing fields require a major
+ * version bump.
+ * sizeof(AVFormatContext) must not be used outside libav*.
+ */
typedef struct AVFormatContext {
const AVClass *av_class; /**< set by av_alloc_format_context */
/* can only be iformat or oformat, not both at the same time */
struct AVInputFormat *iformat;
struct AVOutputFormat *oformat;
void *priv_data;
- ByteIOContext pb;
+ ByteIOContext *pb;
unsigned int nb_streams;
AVStream *streams[MAX_STREAMS];
char filename[1024]; /**< input or output filename */
const uint8_t *key;
int keylen;
+
+ unsigned int nb_programs;
+ AVProgram **programs;
+
+ /**
+ * Forced video codec_id.
+ * demuxing: set by user
+ */
+ enum CodecID video_codec_id;
+ /**
+ * Forced audio codec_id.
+ * demuxing: set by user
+ */
+ enum CodecID audio_codec_id;
+ /**
+ * Forced subtitle codec_id.
+ * demuxing: set by user
+ */
+ enum CodecID subtitle_codec_id;
+
+ /**
+ * Maximum amount of memory in bytes to use per stream for the index.
+ * If the needed index exceeds this size entries will be discarded as
+ * needed to maintain a smaller size. This can lead to slower or less
+ * accurate seeking (depends on demuxer).
+ * Demuxers for which a full in memory index is mandatory will ignore
+ * this.
+ * muxing : unused
+ * demuxing: set by user
+ */
+ unsigned int max_index_size;
+
+ /**
+ * Maximum amount of memory in bytes to use for buffering frames
+ * obtained from real-time capture devices.
+ */
+ unsigned int max_picture_buffer;
} AVFormatContext;
typedef struct AVPacketList {
struct AVPacketList *next;
} AVPacketList;
+#if LIBAVFORMAT_VERSION_INT < (53<<16)
extern AVInputFormat *first_iformat;
extern AVOutputFormat *first_oformat;
+#endif
+
+AVInputFormat *av_iformat_next(AVInputFormat *f);
+AVOutputFormat *av_oformat_next(AVOutputFormat *f);
enum CodecID av_guess_image2_codec(const char *filename);
/* XXX: use automatic init with either ELF sections or C file parser */
/* modules */
-#include "rtp.h"
-
-#include "rtsp.h"
-
/* utils.c */
void av_register_input_format(AVInputFormat *format);
void av_register_output_format(AVOutputFormat *format);
AVInputFormat *fmt,
int buf_size,
AVFormatParameters *ap);
-/** no av_open for output, so applications will need this: */
+/**
+ * Allocate an AVFormatContext.
+ * Can be freed with av_free() but do not forget to free everything you
+ * explicitly allocated as well!
+ */
AVFormatContext *av_alloc_format_context(void);
/**
*
* @param ic media file handle
* @return >=0 if OK. AVERROR_xxx if error.
- * @todo Let user decide somehow what information is needed so we do not waste time geting stuff the user does not need.
+ * @todo Let user decide somehow what information is needed so we do not waste time getting stuff the user does not need.
*/
int av_find_stream_info(AVFormatContext *ic);
*/
int av_read_pause(AVFormatContext *s);
+/**
+ * Free a AVFormatContext allocated by av_open_input_stream.
+ * @param s context to free
+ */
+void av_close_input_stream(AVFormatContext *s);
+
/**
* Close a media file (but not its codecs).
*
* @param id file format dependent stream id
*/
AVStream *av_new_stream(AVFormatContext *s, int id);
+AVProgram *av_new_program(AVFormatContext *s, int id);
/**
* Set the pts for a given stream.
*/
int av_index_search_timestamp(AVStream *st, int64_t timestamp, int flags);
+/**
+ * Ensures 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 a index entry into a sorted list updateing if it is already there.
*
* @param flush 1 if no further packets are available as input and all
* remaining packets should be output
* @return 1 if a packet was output, 0 if no packet could be output,
- * < 0 if an error occured
+ * < 0 if an error occurred
*/
int av_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush);
attribute_deprecated int parse_frame_rate(int *frame_rate, int *frame_rate_base, const char *arg);
/**
- * Converts date string to number of seconds since Jan 1st, 1970.
- *
+ * Parses \p datestr and returns a corresponding number of microseconds.
+ * @param datestr String representing a date or a duration.
+ * - If a date the syntax is:
* @code
- * Syntax:
- * - If not a duration:
* [{YYYY-MM-DD|YYYYMMDD}]{T| }{HH[:MM[:SS[.m...]]][Z]|HH[MM[SS[.m...]]][Z]}
- * Time is localtime unless Z is suffixed to the end. In this case GMT
- * Return the date in micro seconds since 1970
- *
- * - If a duration:
- * HH[:MM[:SS[.m...]]]
- * S+[.m...]
* @endcode
+ * Time is localtime unless Z is appended, in which case it is
+ * interpreted as UTC.
+ * If the year-month-day part isn't specified it takes the current
+ * year-month-day.
+ * Returns the number of microseconds since 1st of January, 1970 up to
+ * the time of the parsed date or INT64_MIN if \p datestr cannot be
+ * successfully parsed.
+ * - If a duration the syntax is:
+ * @code
+ * [-]HH[:MM[:SS[.m...]]]
+ * [-]S+[.m...]
+ * @endcode
+ * Returns the number of microseconds contained in a time interval
+ * with the specified duration or INT64_MIN if \p datestr cannot be
+ * successfully parsed.
+ * @param duration Flag which tells how to interpret \p datestr, if
+ * not zero \p datestr is interpreted as a duration, otherwise as a
+ * date.
*/
int64_t parse_date(const char *datestr, int duration);
* @param buf destination buffer
* @param buf_size destination buffer size
* @param path numbered sequence string
- * @number frame number
+ * @param number frame number
* @return 0 if OK, -1 if format error.
*/
int av_get_frame_filename(char *buf, int buf_size,
#ifdef HAVE_AV_CONFIG_H
-#include "os_support.h"
-
void __dynarray_add(unsigned long **tab_ptr, int *nb_ptr, unsigned long elem);
#ifdef __GNUC__
#endif /* HAVE_AV_CONFIG_H */
-#endif /* AVFORMAT_H */
-
+#endif /* FFMPEG_AVFORMAT_H */