* into component streams, and the reverse process of muxing - writing supplied
* data in a specified container format. It also has an @ref lavf_io
* "I/O module" which supports a number of protocols for accessing the data (e.g.
- * file, tcp, http and others). Before using lavf, you need to call
- * av_register_all() to register all compiled muxers, demuxers and protocols.
+ * file, tcp, http and others).
* Unless you are absolutely sure you won't use libavformat's network
* capabilities, you should also call avformat_network_init().
*
* A supported input format is described by an AVInputFormat struct, conversely
* an output format is described by AVOutputFormat. You can iterate over all
- * registered input/output formats using the av_iformat_next() /
- * av_oformat_next() functions. The protocols layer is not part of the public
- * API, so you can only get the names of supported protocols with the
- * avio_enum_protocols() function.
+ * input/output formats using the av_demuxer_iterate / av_muxer_iterate() functions.
+ * The protocols layer is not part of the public API, so you can only get the names
+ * of supported protocols with the avio_enum_protocols() function.
*
* Main lavf structure used for both muxing and demuxing is AVFormatContext,
* which exports all information about the file being read or written. As with
* Otherwise, if AVPacket.buf is NULL, the packet data is backed by a
* static storage somewhere inside the demuxer and the packet is only valid
* until the next av_read_frame() call or closing the file. If the caller
- * requires a longer lifetime, av_dup_packet() will make an av_malloc()ed copy
- * of it.
+ * requires a longer lifetime, av_packet_make_refcounted() will ensure that
+ * the data is reference counted, copying the data if necessary.
* In both cases, the packet must be freed with av_packet_unref() when it is no
* longer needed.
*
* New public fields should be added right above.
*****************************************************************
*/
- struct AVOutputFormat *next;
+ /**
+ * The ff_const59 define is not part of the public API and will
+ * be removed without further warning.
+ */
+#if FF_API_AVIOFORMAT
+#define ff_const59
+#else
+#define ff_const59 const
+#endif
+ ff_const59 struct AVOutputFormat *next;
/**
* size of private data so that it can be allocated in the wrapper
*/
/**
* Can use flags: AVFMT_NOFILE, AVFMT_NEEDNUMBER, AVFMT_SHOW_IDS,
- * AVFMT_GENERIC_INDEX, AVFMT_TS_DISCONT, AVFMT_NOBINSEARCH,
+ * AVFMT_NOTIMESTAMPS, AVFMT_GENERIC_INDEX, AVFMT_TS_DISCONT, AVFMT_NOBINSEARCH,
* AVFMT_NOGENSEARCH, AVFMT_NO_BYTE_SEEK, AVFMT_SEEK_TO_PTS.
*/
int flags;
* New public fields should be added right above.
*****************************************************************
*/
- struct AVInputFormat *next;
+ ff_const59 struct AVInputFormat *next;
/**
* Raw demuxers store their codec ID here.
* 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 *);
+ int (*read_probe)(const AVProbeData *);
/**
* Read the format header and initialize the AVFormatContext
*
* Demuxing only, set by avformat_open_input().
*/
- struct AVInputFormat *iformat;
+ ff_const59 struct AVInputFormat *iformat;
/**
* The output container format.
*
* Muxing only, must be set by the caller before avformat_write_header().
*/
- struct AVOutputFormat *oformat;
+ ff_const59 struct AVOutputFormat *oformat;
/**
* Format private data. This is an AVOptions-enabled struct
* @return >= 0 in case of success, a negative AVERROR code in case of
* failure
*/
-int avformat_alloc_output_context2(AVFormatContext **ctx, AVOutputFormat *oformat,
+int avformat_alloc_output_context2(AVFormatContext **ctx, ff_const59 AVOutputFormat *oformat,
const char *format_name, const char *filename);
/**
/**
* Find AVInputFormat based on the short name of the input format.
*/
-AVInputFormat *av_find_input_format(const char *short_name);
+ff_const59 AVInputFormat *av_find_input_format(const char *short_name);
/**
* Guess the file format.
* @param is_opened Whether the file is already opened; determines whether
* demuxers with or without AVFMT_NOFILE are probed.
*/
-AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened);
+ff_const59 AVInputFormat *av_probe_input_format(ff_const59 AVProbeData *pd, int is_opened);
/**
* Guess the file format.
* If the score is <= AVPROBE_SCORE_MAX / 4 it is recommended
* to retry with a larger probe buffer.
*/
-AVInputFormat *av_probe_input_format2(AVProbeData *pd, int is_opened, int *score_max);
+ff_const59 AVInputFormat *av_probe_input_format2(ff_const59 AVProbeData *pd, int is_opened, int *score_max);
/**
* Guess the file format.
* demuxers with or without AVFMT_NOFILE are probed.
* @param score_ret The score of the best detection.
*/
-AVInputFormat *av_probe_input_format3(AVProbeData *pd, int is_opened, int *score_ret);
+ff_const59 AVInputFormat *av_probe_input_format3(ff_const59 AVProbeData *pd, int is_opened, int *score_ret);
/**
* Probe a bytestream to determine the input format. Each time a probe returns
* the maximal score is AVPROBE_SCORE_MAX
* AVERROR code otherwise
*/
-int av_probe_input_buffer2(AVIOContext *pb, AVInputFormat **fmt,
+int av_probe_input_buffer2(AVIOContext *pb, ff_const59 AVInputFormat **fmt,
const char *url, void *logctx,
unsigned int offset, unsigned int max_probe_size);
/**
* Like av_probe_input_buffer2() but returns 0 on success
*/
-int av_probe_input_buffer(AVIOContext *pb, AVInputFormat **fmt,
+int av_probe_input_buffer(AVIOContext *pb, ff_const59 AVInputFormat **fmt,
const char *url, void *logctx,
unsigned int offset, unsigned int max_probe_size);
*
* @note If you want to use custom IO, preallocate the format context and set its pb field.
*/
-int avformat_open_input(AVFormatContext **ps, const char *url, AVInputFormat *fmt, AVDictionary **options);
+int avformat_open_input(AVFormatContext **ps, const char *url, ff_const59 AVInputFormat *fmt, AVDictionary **options);
attribute_deprecated
int av_demuxer_open(AVFormatContext *ic);
* @param mime_type if non-NULL checks if mime_type matches with the
* MIME type of the registered formats
*/
-AVOutputFormat *av_guess_format(const char *short_name,
+ff_const59 AVOutputFormat *av_guess_format(const char *short_name,
const char *filename,
const char *mime_type);
/**
* Guess the codec ID based upon muxer and filename.
*/
-enum AVCodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name,
+enum AVCodecID av_guess_codec(ff_const59 AVOutputFormat *fmt, const char *short_name,
const char *filename, const char *mime_type,
enum AVMediaType type);
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