/*
* copyright (c) 2001 Fabrice Bellard
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdint.h>
#include "avformat.h"
+#include "os_support.h"
#define MAX_URL_SIZE 4096
+#ifdef DEBUG
+# define hex_dump_debug(class, buf, size) av_hex_dump_log(class, AV_LOG_DEBUG, buf, size)
+#else
+# define hex_dump_debug(class, buf, size)
+#endif
+
typedef struct AVCodecTag {
- enum CodecID id;
+ enum AVCodecID id;
unsigned int tag;
} AVCodecTag;
+typedef struct CodecMime{
+ char str[32];
+ enum AVCodecID id;
+} CodecMime;
+
+struct AVFormatInternal {
+ /**
+ * Number of streams relevant for interleaving.
+ * Muxing only.
+ */
+ int nb_interleaved_streams;
+
+ /**
+ * This buffer is only needed when packets were already buffered but
+ * not decoded, for example to get the codec parameters in MPEG
+ * streams.
+ */
+ struct AVPacketList *packet_buffer;
+ struct AVPacketList *packet_buffer_end;
+
+ /* av_seek_frame() support */
+ int64_t data_offset; /**< offset of the first packet */
+
+ /**
+ * Raw packets from the demuxer, prior to parsing and decoding.
+ * This buffer is used for buffering packets until the codec can
+ * be identified, as parsing cannot be done without knowing the
+ * codec.
+ */
+ struct AVPacketList *raw_packet_buffer;
+ struct AVPacketList *raw_packet_buffer_end;
+ /**
+ * Packets split by the parser get queued here.
+ */
+ struct AVPacketList *parse_queue;
+ struct AVPacketList *parse_queue_end;
+ /**
+ * Remaining size available for raw_packet_buffer, in bytes.
+ */
+#define RAW_PACKET_BUFFER_SIZE 2500000
+ int raw_packet_buffer_remaining_size;
+
+ /**
+ * Offset to remap timestamps to be non-negative.
+ * Expressed in timebase units.
+ */
+ int64_t offset;
+
+ /**
+ * Timebase for the timestamp offset.
+ */
+ AVRational offset_timebase;
+
+#if FF_API_COMPUTE_PKT_FIELDS2
+ int missing_ts_warning;
+#endif
+};
+
+struct AVStreamInternal {
+ /**
+ * Set to 1 if the codec allows reordering, so pts can be different
+ * from dts.
+ */
+ int reorder;
+ /**
+ * The codec context used by avformat_find_stream_info, the parser, etc.
+ */
+ AVCodecContext *avctx;
+ /**
+ * 1 if avctx has been initialized with the values from the codec parameters
+ */
+ int avctx_inited;
+
+ enum AVCodecID orig_codec_id;
+
+ /* the context for extracting extradata in find_stream_info()
+ * inited=1/bsf=NULL signals that extracting is not possible (codec not
+ * supported) */
+ struct {
+ AVBSFContext *bsf;
+ AVPacket *pkt;
+ int inited;
+ } extract_extradata;
+
+#if FF_API_LAVF_AVCTX
+ // whether the deprecated stream codec context needs
+ // to be filled from the codec parameters
+ int need_codec_update;
+#endif
+};
+
void ff_dynarray_add(intptr_t **tab_ptr, int *nb_ptr, intptr_t elem);
#ifdef __GNUC__
} while(0)
#endif
-struct tm *brktimegm(time_t secs, struct tm *tm);
+struct tm *ff_brktimegm(time_t secs, struct tm *tm);
char *ff_data_to_hex(char *buf, const uint8_t *src, int size, int lowercase);
* Add packet to AVFormatContext->packet_buffer list, determining its
* interleaved position using compare() function argument.
*/
-void ff_interleave_add_packet(AVFormatContext *s, AVPacket *pkt,
- int (*compare)(AVFormatContext *, AVPacket *, AVPacket *));
+int ff_interleave_add_packet(AVFormatContext *s, AVPacket *pkt,
+ int (*compare)(AVFormatContext *, AVPacket *, AVPacket *));
void ff_read_frame_flush(AVFormatContext *s);
/** Get the current time since NTP epoch in microseconds. */
uint64_t ff_ntp_time(void);
-#if FF_API_URL_SPLIT
-/**
- * @deprecated use av_url_split() instead
- */
-void ff_url_split(char *proto, int proto_size,
- char *authorization, int authorization_size,
- char *hostname, int hostname_size,
- int *port_ptr,
- char *path, int path_size,
- const char *url);
-#endif
-
-/**
- * Assemble a URL string from components. This is the reverse operation
- * of av_url_split.
- *
- * Note, this requires networking to be initialized, so the caller must
- * ensure ff_network_init has been called.
- *
- * @see av_url_split
- *
- * @param str the buffer to fill with the url
- * @param size the size of the str buffer
- * @param proto the protocol identifier, if null, the separator
- * after the identifier is left out, too
- * @param authorization an optional authorization string, may be null.
- * An empty string is treated the same as a null string.
- * @param hostname the host name string
- * @param port the port number, left out from the string if negative
- * @param fmt a generic format string for everything to add after the
- * host/port, may be null
- * @return the number of characters written to the destination buffer
- */
-int ff_url_join(char *str, int size, const char *proto,
- const char *authorization, const char *hostname,
- int port, const char *fmt, ...);
-
/**
* Append the media-specific SDP fragment for the media stream c
* to the buffer buff.
*
* @param buff the buffer to append the SDP fragment to
* @param size the size of the buff buffer
- * @param c the AVCodecContext of the media to describe
+ * @param st the AVStream of the media to describe
+ * @param idx the global stream index
* @param dest_addr the destination address of the media stream, may be NULL
* @param dest_type the destination address type, may be NULL
* @param port the destination port of the media stream, 0 if unknown
* @param ttl the time to live of the stream, 0 if not multicast
+ * @param fmt the AVFormatContext, which might contain options modifying
+ * the generated SDP
*/
-void ff_sdp_write_media(char *buff, int size, AVCodecContext *c,
+void ff_sdp_write_media(char *buff, int size, AVStream *st, int idx,
const char *dest_addr, const char *dest_type,
- int port, int ttl);
+ int port, int ttl, AVFormatContext *fmt);
/**
* Write a packet to another muxer than the one the user originally
/**
* Read a whole line of text from AVIOContext. Stop reading after reaching
- * either a \n, a \0 or EOF. The returned string is always \0 terminated,
+ * either a \\n, a \\0 or EOF. The returned string is always \\0-terminated,
* and may be truncated if the buffer is too small.
*
* @param s the read-only AVIOContext
* @param buf buffer to store the read line
* @param maxlen size of the buffer
* @return the length of the string written in the buffer, not including the
- * final \0
+ * final \\0
*/
int ff_get_line(AVIOContext *s, char *buf, int maxlen);
*
* @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);
+AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base,
+ int64_t start, int64_t end, const char *title);
/**
* Ensure the index uses less memory than the maximum specified in
*/
void ff_reduce_index(AVFormatContext *s, int stream_index);
-/*
- * Convert a relative url into an absolute url, given a base url.
+enum AVCodecID ff_guess_image2_codec(const char *filename);
+
+/**
+ * Convert a date string in ISO8601 format to Unix timestamp.
+ */
+int64_t ff_iso8601_to_unix_time(const char *datestr);
+
+/**
+ * Perform a binary search using av_index_search_timestamp() and
+ * AVInputFormat.read_timestamp().
+ *
+ * @param target_ts target timestamp in the time base of the given stream
+ * @param stream_index stream number
+ */
+int ff_seek_frame_binary(AVFormatContext *s, int stream_index,
+ int64_t target_ts, int flags);
+
+/**
+ * Update cur_dts of all streams based on the given timestamp and AVStream.
+ *
+ * Stream ref_st unchanged, others set cur_dts in their native time base.
+ * Only needed for timestamp wrapping or if (dts not set and pts!=dts).
+ * @param timestamp new dts expressed in time_base of param ref_st
+ * @param ref_st reference stream giving time_base of param timestamp
+ */
+void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp);
+
+/**
+ * Perform a binary search using read_timestamp().
+ *
+ * @param target_ts target timestamp in the time base of the given stream
+ * @param stream_index stream number
+ */
+int64_t ff_gen_search(AVFormatContext *s, int stream_index,
+ int64_t target_ts, int64_t pos_min,
+ int64_t pos_max, int64_t pos_limit,
+ int64_t ts_min, int64_t ts_max,
+ int flags, int64_t *ts_ret,
+ int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ));
+
+/**
+ * Set the time base and wrapping info for a given stream. This will be used
+ * to interpret the stream's timestamps. If the new time base is invalid
+ * (numerator or denominator are non-positive), it leaves the stream
+ * unchanged.
+ *
+ * @param s stream
+ * @param pts_wrap_bits number of bits effectively used by the pts
+ * (used for wrap control)
+ * @param pts_num time base numerator
+ * @param pts_den time base denominator
+ */
+void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
+ unsigned int pts_num, unsigned int pts_den);
+
+/**
+ * Add side data to a packet for changing parameters to the given values.
+ * Parameters set to 0 aren't included in the change.
+ */
+int ff_add_param_change(AVPacket *pkt, int32_t channels,
+ uint64_t channel_layout, int32_t sample_rate,
+ int32_t width, int32_t height);
+
+/**
+ * Set the timebase for each stream from the corresponding codec timebase and
+ * print it.
+ */
+int ff_framehash_write_header(AVFormatContext *s);
+
+/**
+ * Read a transport packet from a media file.
+ *
+ * @param s media file handle
+ * @param pkt is filled
+ * @return 0 if OK, AVERROR_xxx on error
+ */
+int ff_read_packet(AVFormatContext *s, AVPacket *pkt);
+
+/**
+ * Interleave a packet per dts in an output media file.
+ *
+ * Packets with pkt->destruct == av_destruct_packet will be freed inside this
+ * function, so they cannot be used after it. Note that calling av_packet_unref()
+ * on them is still safe.
+ *
+ * @param s media file handle
+ * @param out the interleaved packet will be output here
+ * @param pkt the input packet
+ * @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 occurred
+ */
+int ff_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out,
+ AVPacket *pkt, int flush);
+
+/**
+ * Return the frame duration in seconds. Return 0 if not available.
+ */
+void ff_compute_frame_duration(AVFormatContext *s, int *pnum, int *pden, AVStream *st,
+ AVCodecParserContext *pc, AVPacket *pkt);
+
+unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id);
+
+enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag);
+
+/**
+ * Select a PCM codec based on the given parameters.
+ *
+ * @param bps bits-per-sample
+ * @param flt floating-point
+ * @param be big-endian
+ * @param sflags signed flags. each bit corresponds to one byte of bit depth.
+ * e.g. the 1st bit indicates if 8-bit should be signed or
+ * unsigned, the 2nd bit indicates if 16-bit should be signed or
+ * unsigned, etc... This is useful for formats such as WAVE where
+ * only 8-bit is unsigned and all other bit depths are signed.
+ * @return a PCM codec id or AV_CODEC_ID_NONE
+ */
+enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags);
+
+/**
+ * Generate standard extradata for AVC-Intra based on width/height and field
+ * order.
+ */
+int ff_generate_avci_extradata(AVStream *st);
+
+/**
+ * Wrap errno on rename() error.
+ *
+ * @param oldpath source path
+ * @param newpath destination path
+ * @return 0 or AVERROR on failure
+ */
+static inline int ff_rename(const char *oldpath, const char *newpath)
+{
+ if (rename(oldpath, newpath) == -1)
+ return AVERROR(errno);
+ return 0;
+}
+
+/**
+ * A wrapper around AVFormatContext.io_close that should be used
+ * instead of calling the pointer directly.
+ */
+void ff_format_io_close(AVFormatContext *s, AVIOContext **pb);
+
+/**
+ * Find the next packet in the interleaving queue for the given stream.
+ * The pkt parameter is filled in with the queued packet, including
+ * references to the data (which the caller is not allowed to keep or
+ * modify).
*
- * @param buf the buffer where output absolute url is written
- * @param size the size of buf
- * @param base the base url, may be equal to buf.
- * @param rel the new url, which is interpreted relative to base
+ * @return 0 if a packet was found, a negative value if no packet was found
*/
-void ff_make_absolute_url(char *buf, int size, const char *base,
- const char *rel);
+int ff_interleaved_peek(AVFormatContext *s, int stream,
+ AVPacket *pkt, int add_offset);
#endif /* AVFORMAT_INTERNAL_H */
projects / ffmpeg / blobdiff