ffmpeg_demux.c File Reference

#include <float.h>
#include <stdint.h>
#include "ffmpeg.h"
#include "ffmpeg_sched.h"
#include "ffmpeg_utils.h"
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/display.h"
#include "libavutil/error.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mastering_display_metadata.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "libavutil/pixdesc.h"
#include "libavutil/time.h"
#include "libavutil/timestamp.h"
#include "libavcodec/bsf.h"
#include "libavcodec/packet.h"
#include "libavformat/avformat.h"

Go to the source code of this file.

Data Structures
struct	DemuxStreamGroup
struct	DemuxStream
struct	Demuxer
struct	DemuxThreadContext

Macros
#define	DECODING_FOR_OST   1
#define	DECODING_FOR_FILTER   2
#define	SHOW_TS_DEBUG(tag_)

Functions
static DemuxStreamGroup *	dsg_from_istg (InputStreamGroup *istg)
static DemuxStream *	ds_from_ist (InputStream *ist)
static Demuxer *	demuxer_from_ifile (InputFile *f)
InputStream *	ist_find_unused (enum AVMediaType type)
	Find an unused input stream of given type.
static void	report_new_stream (Demuxer *d, const AVPacket *pkt)
static int	seek_to_start (Demuxer *d, Timestamp end_pts)
static void	ts_discontinuity_detect (Demuxer *d, InputStream *ist, AVPacket *pkt)
static void	ts_discontinuity_process (Demuxer *d, InputStream *ist, AVPacket *pkt)
static int	ist_dts_update (DemuxStream *ds, AVPacket *pkt, FrameData *fd)
static int	ts_fixup (Demuxer *d, AVPacket *pkt, FrameData *fd)
static int	input_packet_process (Demuxer *d, AVPacket *pkt, unsigned *send_flags)
static void	readrate_sleep (Demuxer *d)
static int	do_send (Demuxer *d, DemuxStream *ds, AVPacket *pkt, unsigned flags, const char *pkt_desc)
static int	do_bsf_graph (Demuxer *d, DemuxThreadContext *dt, DemuxStreamGroup *dsg, DemuxStream *ds, AVPacket *pkt)
static int	demux_send (Demuxer *d, DemuxThreadContext *dt, DemuxStream *ds, AVPacket *pkt, unsigned flags)
static int	demux_bsf_flush (Demuxer *d, DemuxThreadContext *dt)
static void	discard_unused_programs (InputFile *ifile)
static void	thread_set_name (InputFile *f)
static void	demux_thread_uninit (DemuxThreadContext *dt)
static int	demux_thread_init (DemuxThreadContext *dt)
static int	input_thread (void *arg)
static void	demux_final_stats (Demuxer *d)
static void	ist_free (InputStream **pist)
static void	istg_free (InputStreamGroup **pistg)
void	ifile_close (InputFile **pf)
int	ist_use (InputStream *ist, int decoding_needed, const ViewSpecifier *vs, SchedulerNode *src)
int	ist_filter_add (InputStream *ist, InputFilter *ifilter, int is_simple, const ViewSpecifier *vs, InputFilterOptions *opts, SchedulerNode *src)
static int	choose_decoder (const OptionsContext *o, void *logctx, AVFormatContext *s, AVStream *st, enum HWAccelID hwaccel_id, enum AVHWDeviceType hwaccel_device_type, const AVCodec **pcodec)
static int	guess_input_channel_layout (InputStream *ist, AVCodecParameters *par, int guess_layout_max)
static int	add_display_matrix_to_stream (const OptionsContext *o, AVFormatContext *ctx, InputStream *ist)
static int	add_mastering_display_to_stream (const OptionsContext *o, AVFormatContext *ctx, InputStream *ist)
static int	add_content_light_to_stream (const OptionsContext *o, AVFormatContext *ctx, InputStream *ist)
static const char *	input_stream_item_name (void *obj)
static DemuxStream *	demux_stream_alloc (Demuxer *d, AVStream *st)
static int	ist_add (const OptionsContext *o, Demuxer *d, AVStream *st, AVDictionary **opts_used)
static const char *	input_stream_group_item_name (void *obj)
static DemuxStreamGroup *	demux_stream_group_alloc (Demuxer *d, AVStreamGroup *stg)
static int	istg_parse_tile_grid (const OptionsContext *o, Demuxer *d, InputStreamGroup *istg)
static int	istg_parse_lcevc (const OptionsContext *o, Demuxer *d, DemuxStreamGroup *dsg)
static int	istg_add (const OptionsContext *o, Demuxer *d, AVStreamGroup *stg)
static int	is_windows_reserved_device_name (const char *f)
static int	safe_filename (const char *f, int allow_subdir)
static int	dump_attachment (InputStream *ist, const char *filename)
static const char *	input_file_item_name (void *obj)
static Demuxer *	demux_alloc (void)
int	ifile_open (const OptionsContext *o, const char *filename, Scheduler *sch)

Variables
static const AVClass	input_stream_class
static const AVClass	input_stream_group_class
static const AVClass	input_file_class

Macro Definition Documentation

DECODING_FOR_OST

#define DECODING_FOR_OST   1

Definition at line 70 of file ffmpeg_demux.c.

Referenced by ist_filter_add(), and ist_use().

DECODING_FOR_FILTER

#define DECODING_FOR_FILTER   2

Definition at line 71 of file ffmpeg_demux.c.

Referenced by ist_filter_add(), and ist_use().

SHOW_TS_DEBUG

#define SHOW_TS_DEBUG

(

tag_

)

Value:

    if (debug_ts) {                                                     \
        av_log(ist, AV_LOG_INFO, "%s -> ist_index:%d:%d type:%s "       \
               "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s duration:%s duration_time:%s\n", \
               tag_, ifile->index, pkt->stream_index,                   \
               av_get_media_type_string(ist->st->codecpar->codec_type), \
               av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &pkt->time_base), \
               av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &pkt->time_base), \
               av_ts2str(pkt->duration), av_ts2timestr(pkt->duration, &pkt->time_base)); \
    }

Referenced by ts_fixup().

Function Documentation

dsg_from_istg()

static DemuxStreamGroup * dsg_from_istg ( InputStreamGroup * istg )

static

Definition at line 176 of file ffmpeg_demux.c.

Referenced by istg_free().

ds_from_ist()

static DemuxStream * ds_from_ist ( InputStream * ist )

static

Definition at line 181 of file ffmpeg_demux.c.

Referenced by add_content_light_to_stream(), add_display_matrix_to_stream(), add_mastering_display_to_stream(), demux_bsf_flush(), demux_final_stats(), demux_send(), discard_unused_programs(), input_packet_process(), input_thread(), ist_filter_add(), ist_find_unused(), ist_free(), ist_use(), istg_add(), readrate_sleep(), ts_discontinuity_detect(), and ts_fixup().

demuxer_from_ifile()

static Demuxer * demuxer_from_ifile ( InputFile * f )

static

Definition at line 186 of file ffmpeg_demux.c.

Referenced by ifile_close(), ist_filter_add(), and ist_use().

ist_find_unused()

InputStream * ist_find_unused

(

enum AVMediaType

type

)

Find an unused input stream of given type.

Definition at line 191 of file ffmpeg_demux.c.

Referenced by fg_complex_bind_input().

report_new_stream()

static void report_new_stream ( Demuxer * d, const AVPacket * pkt )

static

Definition at line 202 of file ffmpeg_demux.c.

Referenced by input_thread().

seek_to_start()

static int seek_to_start ( Demuxer * d, Timestamp end_pts )

static

Definition at line 215 of file ffmpeg_demux.c.

Referenced by input_thread().

ts_discontinuity_detect()

static void ts_discontinuity_detect ( Demuxer * d, InputStream * ist, AVPacket * pkt )

static

Definition at line 242 of file ffmpeg_demux.c.

Referenced by ts_discontinuity_process().

ts_discontinuity_process()

static void ts_discontinuity_process ( Demuxer * d, InputStream * ist, AVPacket * pkt )

static

Definition at line 310 of file ffmpeg_demux.c.

Referenced by ts_fixup().

ist_dts_update()

static int ist_dts_update ( DemuxStream * ds, AVPacket * pkt, FrameData * fd )

static

Definition at line 330 of file ffmpeg_demux.c.

Referenced by ts_fixup().

ts_fixup()

static int ts_fixup ( Demuxer * d, AVPacket * pkt, FrameData * fd )

static

Definition at line 390 of file ffmpeg_demux.c.

Referenced by input_packet_process().

input_packet_process()

static int input_packet_process ( Demuxer * d, AVPacket * pkt, unsigned * send_flags )

static

Definition at line 481 of file ffmpeg_demux.c.

Referenced by input_thread().

readrate_sleep()

static void readrate_sleep ( Demuxer * d )

static

Definition at line 525 of file ffmpeg_demux.c.

Referenced by input_thread().

do_send()

static int do_send ( Demuxer * d, DemuxStream * ds, AVPacket * pkt, unsigned flags, const char * pkt_desc )

static

Definition at line 586 of file ffmpeg_demux.c.

Referenced by demux_send(), and do_bsf_graph().

do_bsf_graph()

static int do_bsf_graph ( Demuxer * d, DemuxThreadContext * dt, DemuxStreamGroup * dsg, DemuxStream * ds, AVPacket * pkt )

static

Definition at line 615 of file ffmpeg_demux.c.

Referenced by demux_send().

demux_send()

static int demux_send ( Demuxer * d, DemuxThreadContext * dt, DemuxStream * ds, AVPacket * pkt, unsigned flags )

static

Definition at line 673 of file ffmpeg_demux.c.

Referenced by demux_bsf_flush(), and input_thread().

demux_bsf_flush()

static int demux_bsf_flush ( Demuxer * d, DemuxThreadContext * dt )

static

Definition at line 759 of file ffmpeg_demux.c.

Referenced by input_thread().

discard_unused_programs()

static void discard_unused_programs ( InputFile * ifile )

static

Definition at line 795 of file ffmpeg_demux.c.

Referenced by input_thread().

thread_set_name()

static void thread_set_name ( InputFile * f )

static

Definition at line 813 of file ffmpeg_demux.c.

Referenced by input_thread().

demux_thread_uninit()

static void demux_thread_uninit ( DemuxThreadContext * dt )

static

Definition at line 820 of file ffmpeg_demux.c.

Referenced by input_thread().

demux_thread_init()

static int demux_thread_init ( DemuxThreadContext * dt )

static

Definition at line 828 of file ffmpeg_demux.c.

Referenced by input_thread().

input_thread()

static int input_thread ( void * arg )

static

Definition at line 843 of file ffmpeg_demux.c.

Referenced by ifile_open().

demux_final_stats()

static void demux_final_stats ( Demuxer * d )

static

Definition at line 951 of file ffmpeg_demux.c.

Referenced by ifile_close().

ist_free()

static void ist_free ( InputStream ** pist )

static

Definition at line 991 of file ffmpeg_demux.c.

Referenced by ifile_close().

istg_free()

static void istg_free ( InputStreamGroup ** pistg )

static

Definition at line 1016 of file ffmpeg_demux.c.

Referenced by ifile_close().

ifile_close()

void ifile_close

(

InputFile **

pf

)

Definition at line 1031 of file ffmpeg_demux.c.

Referenced by ffmpeg_cleanup().

ist_use()

int ist_use	(	InputStream *	ist,
		int	decoding_needed,
		const ViewSpecifier *	vs,
		SchedulerNode *	src )

Definition at line 1057 of file ffmpeg_demux.c.

Referenced by ist_filter_add(), and ost_add().

ist_filter_add()

int ist_filter_add	(	InputStream *	ist,
		InputFilter *	ifilter,
		int	is_simple,
		const ViewSpecifier *	vs,
		InputFilterOptions *	opts,
		SchedulerNode *	src )

Definition at line 1210 of file ffmpeg_demux.c.

Referenced by ifilter_bind_ist().

choose_decoder()

static int choose_decoder ( const OptionsContext * o, void * logctx, AVFormatContext * s, AVStream * st, enum HWAccelID hwaccel_id, enum AVHWDeviceType hwaccel_device_type, const AVCodec ** pcodec )

static

Definition at line 1308 of file ffmpeg_demux.c.

Referenced by ifile_open(), and ist_add().

guess_input_channel_layout()

static int guess_input_channel_layout ( InputStream * ist, AVCodecParameters * par, int guess_layout_max )

static

Definition at line 1355 of file ffmpeg_demux.c.

Referenced by ist_add().

add_display_matrix_to_stream()

static int add_display_matrix_to_stream ( const OptionsContext * o, AVFormatContext * ctx, InputStream * ist )

static

Definition at line 1372 of file ffmpeg_demux.c.

Referenced by ist_add().

add_mastering_display_to_stream()

static int add_mastering_display_to_stream ( const OptionsContext * o, AVFormatContext * ctx, InputStream * ist )

static

Definition at line 1416 of file ffmpeg_demux.c.

Referenced by ist_add().

add_content_light_to_stream()

static int add_content_light_to_stream ( const OptionsContext * o, AVFormatContext * ctx, InputStream * ist )

static

Definition at line 1491 of file ffmpeg_demux.c.

Referenced by ist_add().

input_stream_item_name()

static const char * input_stream_item_name ( void * obj )

static

Definition at line 1535 of file ffmpeg_demux.c.

demux_stream_alloc()

static DemuxStream * demux_stream_alloc ( Demuxer * d, AVStream * st )

static

Definition at line 1549 of file ffmpeg_demux.c.

Referenced by ist_add().

ist_add()

static int ist_add ( const OptionsContext * o, Demuxer * d, AVStream * st, AVDictionary ** opts_used )

static

Definition at line 1574 of file ffmpeg_demux.c.

Referenced by ifile_open().

input_stream_group_item_name()

static const char * input_stream_group_item_name ( void * obj )

static

Definition at line 1911 of file ffmpeg_demux.c.

demux_stream_group_alloc()

static DemuxStreamGroup * demux_stream_group_alloc ( Demuxer * d, AVStreamGroup * stg )

static

Definition at line 1925 of file ffmpeg_demux.c.

Referenced by istg_add().

istg_parse_tile_grid()

static int istg_parse_tile_grid ( const OptionsContext * o, Demuxer * d, InputStreamGroup * istg )

static

Definition at line 1945 of file ffmpeg_demux.c.

Referenced by istg_add().

istg_parse_lcevc()

static int istg_parse_lcevc ( const OptionsContext * o, Demuxer * d, DemuxStreamGroup * dsg )

static

Definition at line 2029 of file ffmpeg_demux.c.

Referenced by istg_add().

istg_add()

static int istg_add ( const OptionsContext * o, Demuxer * d, AVStreamGroup * stg )

static

Definition at line 2080 of file ffmpeg_demux.c.

Referenced by ifile_open().

is_windows_reserved_device_name()

static int is_windows_reserved_device_name ( const char * f )

static

Definition at line 2124 of file ffmpeg_demux.c.

Referenced by safe_filename().

safe_filename()

static int safe_filename ( const char * f, int allow_subdir )

static

Definition at line 2152 of file ffmpeg_demux.c.

Referenced by add_file(), and dump_attachment().

dump_attachment()

static int dump_attachment ( InputStream * ist, const char * filename )

static

Definition at line 2174 of file ffmpeg_demux.c.

Referenced by ifile_open().

input_file_item_name()

static const char * input_file_item_name ( void * obj )

static

Definition at line 2217 of file ffmpeg_demux.c.

demux_alloc()

static Demuxer * demux_alloc ( void )

static

Definition at line 2231 of file ffmpeg_demux.c.

Referenced by ifile_open().

ifile_open()

int ifile_open	(	const OptionsContext *	o,
		const char *	filename,
		Scheduler *	sch )

Definition at line 2246 of file ffmpeg_demux.c.

Referenced by ffmpeg_parse_options().

Variable Documentation

input_stream_class

const AVClass input_stream_class

static

Initial value:

= {
    .class_name = "InputStream",
    .version    = LIBAVUTIL_VERSION_INT,
    .item_name  = input_stream_item_name,
    .category   = AV_CLASS_CATEGORY_DEMUXER,
}

Definition at line 1542 of file ffmpeg_demux.c.

Referenced by demux_stream_alloc().

input_stream_group_class

const AVClass input_stream_group_class

static

Initial value:

= {
    .class_name = "InputStreamGroup",
    .version    = LIBAVUTIL_VERSION_INT,
    .item_name  = input_stream_group_item_name,
    .category   = AV_CLASS_CATEGORY_DEMUXER,
}

Definition at line 1918 of file ffmpeg_demux.c.

Referenced by demux_stream_group_alloc().

input_file_class

const AVClass input_file_class

static

Initial value:

= {
    .class_name = "InputFile",
    .version    = LIBAVUTIL_VERSION_INT,
    .item_name  = input_file_item_name,
    .category   = AV_CLASS_CATEGORY_DEMUXER,
}

Definition at line 2224 of file ffmpeg_demux.c.

Referenced by demux_alloc().