#include "avio.h"
#include "libavformat/version.h"
+#if FF_API_AV_GETTIME
+#include "libavutil/time.h"
+#endif
+
struct AVFormatContext;
AVSTREAM_PARSE_HEADERS, /**< Only parse headers, do not repack. */
AVSTREAM_PARSE_TIMESTAMPS, /**< full parsing and interpolation of timestamps for frames not starting on a packet boundary */
AVSTREAM_PARSE_FULL_ONCE, /**< full parsing and repack of the first frame only, only implemented for H.264 currently */
- AVSTREAM_PARSE_FULL_RAW=MKTAG(0,'R','A','W'), /**< full parsing and repack with timestamp generation for raw */
+ AVSTREAM_PARSE_FULL_RAW=MKTAG(0,'R','A','W'), /**< full parsing and repack with timestamp and position generation by parser for raw
+ this assumes that each packet in the file contains no demuxer level headers and
+ just codec level data, otherwise position generaion would fail */
};
typedef struct AVIndexEntry {
* not actually used for encoding.
*/
AVCodecContext *codec;
+#if FF_API_R_FRAME_RATE
/**
* Real base framerate of the stream.
* This is the lowest framerate with which all timestamps can be
* approximately 3600 or 1800 timer ticks, then r_frame_rate will be 50/1.
*/
AVRational r_frame_rate;
+#endif
void *priv_data;
/**
/**
* Stream information used internally by av_find_stream_info()
*/
-#define MAX_STD_TIMEBASES (60*12+5)
+#define MAX_STD_TIMEBASES (60*12+6)
struct {
int64_t last_dts;
int64_t duration_gcd;
int64_t codec_info_duration;
int nb_decoded_frames;
int found_decoder;
+
+ /**
+ * 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;
int pts_wrap_bits; /**< number of bits in pts (used for wrapping control) */
* should be discarded.
*/
int skip_to_keyframe;
+
+ /**
+ * Number of samples to skip at the start of the frame decoded from the next packet.
+ */
+ int skip_samples;
} AVStream;
#define AV_PROGRAM_RUNNING 1
AVDictionary *metadata;
} AVChapter;
+
+/**
+ * The duration of a video can be estimated through various ways, and this enum can be used
+ * to know how the duration was estimated.
+ */
+enum AVDurationEstimationMethod {
+ AVFMT_DURATION_FROM_PTS, ///< Duration accurately estimated from PTSes
+ AVFMT_DURATION_FROM_STREAM, ///< Duration estimated from a stream with a known duration
+ AVFMT_DURATION_FROM_BITRATE ///< Duration estimated from bitrate (less accurate)
+};
+
/**
* Format I/O context.
* New fields can be added to the end with minor version bumps.
#define AVFMT_FLAG_IGNDTS 0x0008 ///< Ignore DTS on frames that contain both DTS & PTS
#define AVFMT_FLAG_NOFILLIN 0x0010 ///< Do not infer any values from other values, just return what is stored in the container
#define AVFMT_FLAG_NOPARSE 0x0020 ///< Do not use AVParsers, you also must set AVFMT_FLAG_NOFILLIN as the fillin code works on frames and no parsing -> no frames. Also seeking to frames can not work if parsing to find frame boundaries has been disabled
+#define AVFMT_FLAG_NOBUFFER 0x0040 ///< Do not buffer frames when possible
#define AVFMT_FLAG_CUSTOM_IO 0x0080 ///< The caller has supplied a custom AVIOContext, don't avio_close() it.
#define AVFMT_FLAG_DISCARD_CORRUPT 0x0100 ///< Discard frames marked corrupted
#define AVFMT_FLAG_MP4A_LATM 0x8000 ///< Enable RTP MP4A-LATM payload
#define AVFMT_FLAG_SORT_DTS 0x10000 ///< try to interleave outputted packets by dts (using this flag can slow demuxing down)
#define AVFMT_FLAG_PRIV_OPT 0x20000 ///< Enable use of private options by delaying codec open (this could be made default once all code is converted)
-#define AVFMT_FLAG_KEEP_SIDE_DATA 0x40000 ///< Dont merge side data but keep it separate.
+#define AVFMT_FLAG_KEEP_SIDE_DATA 0x40000 ///< Don't merge side data but keep it separate.
/**
* decoding: size of data to probe; encoding: unused.
int raw_packet_buffer_remaining_size;
int avio_flags;
+
+ /**
+ * The duration field can be estimated through various ways, and this field can be used
+ * to know how the duration was estimated.
+ */
+ enum AVDurationEstimationMethod duration_estimation_method;
} AVFormatContext;
+/**
+ * Returns the method used to set ctx->duration.
+ *
+ * @return AVFMT_DURATION_FROM_PTS, AVFMT_DURATION_FROM_STREAM, or AVFMT_DURATION_FROM_BITRATE.
+ */
+enum AVDurationEstimationMethod av_fmt_ctx_get_duration_estimation_method(const AVFormatContext* ctx);
+
typedef struct AVPacketList {
AVPacket pkt;
struct AVPacketList *next;
* @ingroup libavf
* @{
*
- * Miscelaneous utility functions related to both muxing and demuxing
+ * Miscellaneous utility functions related to both muxing and demuxing
* (or neither).
*/
const char *url,
int is_output);
-/**
- * Get the current time in microseconds.
- */
-int64_t av_gettime(void);
-
/**
* Return in 'buf' the path with '%d' replaced by a number.
*
const struct AVCodecTag *avformat_get_riff_audio_tags(void);
/**
- * Guesses the sample aspect ratio of a frame, based on both the stream and the
+ * @}
+ */
+
+/**
+ * Guess the sample aspect ratio of a frame, based on both the stream and the
* frame aspect ratio.
*
* Since the frame aspect ratio is set by the codec but the stream aspect ratio
AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame);
/**
- * @}
+ * Check if the stream st contained in s is matched by the stream specifier
+ * spec.
+ *
+ * See the "stream specifiers" chapter in the documentation for the syntax
+ * of spec.
+ *
+ * @return >0 if st is matched by spec;
+ * 0 if st is not matched by spec;
+ * AVERROR code if spec is invalid
+ *
+ * @note A stream specifier can match several streams in the format.
*/
+int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
+ const char *spec);
/**
* @}
projects / ffmpeg / blobdiff