ffmpeg.c File Reference

#include "config.h"
#include <errno.h>
#include <limits.h>
#include <stdatomic.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/bprint.h"
#include "libavutil/channel_layout.h"
#include "libavutil/dict.h"
#include "libavutil/display.h"
#include "libavutil/fifo.h"
#include "libavutil/hwcontext.h"
#include "libavutil/imgutils.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/libm.h"
#include "libavutil/mathematics.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "libavutil/pixdesc.h"
#include "libavutil/samplefmt.h"
#include "libavutil/thread.h"
#include "libavutil/threadmessage.h"
#include "libavutil/timestamp.h"
#include "libavcodec/version.h"
#include "libavformat/avformat.h"
#include "libavdevice/avdevice.h"
#include "libswresample/swresample.h"
#include "cmdutils.h"
#include "ffmpeg.h"
#include "sync_queue.h"

Go to the source code of this file.

Data Structures
struct	BenchmarkTimeStamps

Macros
#define	SIGNAL(sig, func)   signal(sig, func)

Functions
static BenchmarkTimeStamps	get_benchmark_time_stamps (void)
static int64_t	getmaxrss (void)
static void	sub2video_heartbeat (InputFile *infile, int64_t pts, AVRational tb)
static void	term_exit_sigsafe (void)
void	term_exit (void)
static void	sigterm_handler (int sig)
void	term_init (void)
static int	read_key (void)
static int	decode_interrupt_cb (void *ctx)
static void	ffmpeg_cleanup (int ret)
OutputStream *	ost_iter (OutputStream *prev)
InputStream *	ist_iter (InputStream *prev)
FrameData *	frame_data (AVFrame *frame)
	Get our axiliary frame data attached to the frame, allocating it if needed. More...
void	remove_avoptions (AVDictionary **a, AVDictionary *b)
int	check_avoptions (AVDictionary *m)
void	update_benchmark (const char *fmt,...)
void	close_output_stream (OutputStream *ost)
static void	print_report (int is_last_report, int64_t timer_start, int64_t cur_time)
int	copy_av_subtitle (AVSubtitle *dst, const AVSubtitle *src)
static void	subtitle_free (void *opaque, uint8_t *data)
int	subtitle_wrap_frame (AVFrame *frame, AVSubtitle *subtitle, int copy)
int	trigger_fix_sub_duration_heartbeat (OutputStream *ost, const AVPacket *pkt)
static int	process_input_packet (InputStream *ist, const AVPacket *pkt, int no_eof)
static void	print_stream_maps (void)
static int	choose_output (OutputStream **post)
	Select the output stream to process. More...
static void	set_tty_echo (int on)
static int	check_keyboard_interaction (int64_t cur_time)
static void	reset_eagain (void)
static void	decode_flush (InputFile *ifile)
static int	process_input (int file_index)
static int	transcode_step (OutputStream *ost)
	Run a single step of transcoding. More...
static int	transcode (int *err_rate_exceeded)
int	main (int argc, char **argv)

Variables
const char	program_name [] = "ffmpeg"
	program name, defined by the program for show_version(). More...
const int	program_birth_year = 2000
	program birth year, defined by the program for show_banner() More...
FILE *	vstats_file
unsigned	nb_output_dumped = 0
static BenchmarkTimeStamps	current_time
AVIOContext *	progress_avio = NULL
InputFile **	input_files = NULL
int	nb_input_files = 0
OutputFile **	output_files = NULL
int	nb_output_files = 0
FilterGraph **	filtergraphs
int	nb_filtergraphs
static volatile int	received_sigterm = 0
static volatile int	received_nb_signals = 0
static atomic_int	transcode_init_done = ATOMIC_VAR_INIT(0)
static volatile int	ffmpeg_exited = 0
static int64_t	copy_ts_first_pts = AV_NOPTS_VALUE
const AVIOInterruptCB	int_cb = { decode_interrupt_cb, NULL }

Detailed Description

multimedia converter based on the FFmpeg libraries

Definition in file ffmpeg.c.

Macro Definition Documentation

SIGNAL

#define SIGNAL	(		sig,
			func
	)		signal(sig, func)

Definition at line 237 of file ffmpeg.c.

Function Documentation

get_benchmark_time_stamps()

static BenchmarkTimeStamps get_benchmark_time_stamps ( void  )

static

Definition at line 1248 of file ffmpeg.c.

Referenced by main(), and update_benchmark().

getmaxrss()

static int64_t getmaxrss ( void  )

static

Definition at line 1274 of file ffmpeg.c.

Referenced by ffmpeg_cleanup().

sub2video_heartbeat()

static void sub2video_heartbeat ( InputFile *  infile, int64_t  pts, AVRational  tb  )

static

Definition at line 144 of file ffmpeg.c.

Referenced by process_input().

term_exit_sigsafe()

static void term_exit_sigsafe ( void  )

static

Definition at line 163 of file ffmpeg.c.

Referenced by sigterm_handler(), and term_exit().

term_exit()

void term_exit

(

void

)

Definition at line 171 of file ffmpeg.c.

Referenced by assert_file_overwrite(), ffmpeg_cleanup(), and transcode().

sigterm_handler()

static void sigterm_handler ( int  sig )

static

Definition at line 184 of file ffmpeg.c.

Referenced by term_init().

term_init()

void term_init

(

void

)

Definition at line 241 of file ffmpeg.c.

Referenced by assert_file_overwrite().

read_key()

static int read_key ( void  )

static

Definition at line 290 of file ffmpeg.c.

Referenced by check_keyboard_interaction().

decode_interrupt_cb()

static int decode_interrupt_cb ( void *  ctx )

static

Definition at line 341 of file ffmpeg.c.

ffmpeg_cleanup()

static void ffmpeg_cleanup ( int  ret )

static

Definition at line 348 of file ffmpeg.c.

Referenced by main().

ost_iter()

OutputStream* ost_iter

(

OutputStream *

prev

)

Definition at line 397 of file ffmpeg.c.

Referenced by choose_output(), enc_flush(), print_report(), print_stream_maps(), and reset_eagain().

ist_iter()

InputStream* ist_iter

(

InputStream *

prev

)

Definition at line 413 of file ffmpeg.c.

Referenced by ist_find_unused(), map_auto_data(), map_auto_subtitle(), print_stream_maps(), and transcode().

frame_data()

FrameData* frame_data

(

AVFrame *

frame

)

Get our axiliary frame data attached to the frame, allocating it if needed.

Definition at line 429 of file ffmpeg.c.

Referenced by choose_out_timebase(), dwt_plane(), fg_output_step(), fg_transcode_step(), generate_raw_frame(), nvenc_retrieve_frame_data(), nvenc_store_frame_data(), and packet_decode().

remove_avoptions()

void remove_avoptions	(	AVDictionary **	a,
		AVDictionary *	b
	)

Definition at line 446 of file ffmpeg.c.

Referenced by ifile_open().

check_avoptions()

int check_avoptions

(

AVDictionary *

m

)

Definition at line 455 of file ffmpeg.c.

Referenced by dec_open(), enc_open(), and ifile_open().

update_benchmark()

void update_benchmark	(	const char *	fmt,
			...
	)

Definition at line 466 of file ffmpeg.c.

Referenced by encode_frame(), and packet_decode().

close_output_stream()

void close_output_stream

(

OutputStream *

ost

)

Definition at line 487 of file ffmpeg.c.

Referenced by check_recording_time(), fg_transcode_step(), and submit_encode_frame().

print_report()

static void print_report ( int  is_last_report, int64_t  timer_start, int64_t  cur_time  )

static

Definition at line 496 of file ffmpeg.c.

Referenced by transcode().

copy_av_subtitle()

int copy_av_subtitle	(	AVSubtitle *	dst,
		const AVSubtitle *	src
	)

Definition at line 651 of file ffmpeg.c.

Referenced by subtitle_wrap_frame().

subtitle_free()

static void subtitle_free ( void *  opaque, uint8_t *  data  )

static

Definition at line 731 of file ffmpeg.c.

Referenced by subtitle_wrap_frame().

subtitle_wrap_frame()

int subtitle_wrap_frame	(	AVFrame *	frame,
		AVSubtitle *	subtitle,
		int	copy
	)

Definition at line 738 of file ffmpeg.c.

Referenced by fix_sub_duration_heartbeat(), and transcode_subtitles().

trigger_fix_sub_duration_heartbeat()

int trigger_fix_sub_duration_heartbeat	(	OutputStream *	ost,
		const AVPacket *	pkt
	)

Definition at line 771 of file ffmpeg.c.

Referenced by encode_frame(), and of_streamcopy().

process_input_packet()

static int process_input_packet ( InputStream *  ist, const AVPacket *  pkt, int  no_eof  )

static

Definition at line 803 of file ffmpeg.c.

Referenced by process_input(), and transcode().

print_stream_maps()

static void print_stream_maps ( void  )

static

Definition at line 846 of file ffmpeg.c.

Referenced by transcode().

choose_output()

static int choose_output ( OutputStream **  post )

static

Select the output stream to process.

Return values

0	an output stream was selected
AVERROR(EAGAIN)	need to wait until more input is available
AVERROR_EOF	no more streams need output

Definition at line 929 of file ffmpeg.c.

Referenced by transcode().

set_tty_echo()

static void set_tty_echo ( int  on )

static

Definition at line 959 of file ffmpeg.c.

Referenced by check_keyboard_interaction().

check_keyboard_interaction()

static int check_keyboard_interaction ( int64_t  cur_time )

static

Definition at line 971 of file ffmpeg.c.

Referenced by transcode().

reset_eagain()

static void reset_eagain ( void  )

static

Definition at line 1030 of file ffmpeg.c.

Referenced by process_input(), and transcode().

decode_flush()

static void decode_flush ( InputFile *  ifile )

static

Definition at line 1039 of file ffmpeg.c.

Referenced by process_input().

process_input()

static int process_input ( int  file_index )

static

Definition at line 1058 of file ffmpeg.c.

Referenced by transcode_step().

transcode_step()

static int transcode_step ( OutputStream *  ost )

static

Run a single step of transcoding.

Returns

0 for success, <0 for error

Definition at line 1127 of file ffmpeg.c.

Referenced by transcode().

transcode()

static int transcode ( int *  err_rate_exceeded )

static

Definition at line 1166 of file ffmpeg.c.

Referenced by main().

main()

int main	(	int	argc,
		char **	argv
	)

Definition at line 1292 of file ffmpeg.c.

Variable Documentation

program_name

const char program_name[] = "ffmpeg"

program name, defined by the program for show_version().

Definition at line 104 of file ffmpeg.c.

Referenced by main().

program_birth_year

const int program_birth_year = 2000

program birth year, defined by the program for show_banner()

Definition at line 105 of file ffmpeg.c.

vstats_file

FILE* vstats_file

Definition at line 107 of file ffmpeg.c.

Referenced by ffmpeg_cleanup(), and update_video_stats().

nb_output_dumped

unsigned nb_output_dumped = 0

Definition at line 118 of file ffmpeg.c.

Referenced by mux_check_init(), and print_report().

current_time

BenchmarkTimeStamps current_time

static

Definition at line 120 of file ffmpeg.c.

Referenced by main(), and update_benchmark().

progress_avio

AVIOContext* progress_avio = NULL

Definition at line 121 of file ffmpeg.c.

Referenced by print_report().

input_files

InputFile** input_files = NULL

Definition at line 123 of file ffmpeg.c.

Referenced by apply_sync_offsets(), assert_file_overwrite(), configure_input_audio_filter(), configure_input_video_filter(), copy_meta(), correct_input_start_times(), decoder_thread(), demux_alloc(), ffmpeg_cleanup(), fg_transcode_step(), init_input_filter(), input_packet_process(), ist_iter(), map_auto_audio(), map_auto_video(), map_manual(), new_stream_video(), opt_map(), opt_map_channel(), opt_target(), packet_decode(), process_input(), process_input_packet(), reset_eagain(), streamcopy_init(), transcode(), transcode_step(), and video_duration_estimate().

nb_input_files

int nb_input_files = 0

Definition at line 124 of file ffmpeg.c.

Referenced by apply_sync_offsets(), assert_file_overwrite(), copy_meta(), correct_input_start_times(), demux_alloc(), ffmpeg_cleanup(), init_input_filter(), ist_iter(), main(), map_auto_audio(), map_auto_video(), opt_map(), opt_map_channel(), opt_target(), reset_eagain(), and thread_start().

output_files

OutputFile** output_files = NULL

Definition at line 126 of file ffmpeg.c.

Referenced by check_recording_time(), close_output_stream(), configure_output_audio_filter(), configure_output_video_filter(), enc_flush(), enc_frame(), enc_open(), enc_subtitle(), ffmpeg_cleanup(), init_output_stream_nofilter(), mux_alloc(), mux_check_init(), new_stream_video(), of_streamcopy(), ofilter_bind_ost(), ost_iter(), print_report(), print_sdp(), process_input(), process_subtitle(), transcode(), and trigger_fix_sub_duration_heartbeat().

nb_output_files

int nb_output_files = 0

Definition at line 127 of file ffmpeg.c.

Referenced by create_streams(), ffmpeg_cleanup(), main(), mux_alloc(), mux_check_init(), ost_iter(), print_report(), print_sdp(), and transcode().

filtergraphs

FilterGraph** filtergraphs

Definition at line 129 of file ffmpeg.c.

Referenced by check_filter_outputs(), check_keyboard_interaction(), create_streams(), ffmpeg_cleanup(), fg_create(), init_complex_filters(), map_manual(), and transcode_step().

nb_filtergraphs

int nb_filtergraphs

Definition at line 130 of file ffmpeg.c.

Referenced by check_filter_outputs(), check_keyboard_interaction(), create_streams(), ffmpeg_cleanup(), fg_create(), init_complex_filters(), map_manual(), print_stream_maps(), and transcode_step().

received_sigterm

volatile int received_sigterm = 0

static

Definition at line 177 of file ffmpeg.c.

Referenced by ffmpeg_cleanup(), sigterm_handler(), and transcode().

received_nb_signals

volatile int received_nb_signals = 0

static

Definition at line 178 of file ffmpeg.c.

Referenced by check_keyboard_interaction(), decode_interrupt_cb(), main(), and sigterm_handler().

transcode_init_done

atomic_int transcode_init_done = ATOMIC_VAR_INIT(0)

static

Definition at line 179 of file ffmpeg.c.

Referenced by decode_interrupt_cb(), ffmpeg_cleanup(), and transcode().

ffmpeg_exited

volatile int ffmpeg_exited = 0

static

Definition at line 180 of file ffmpeg.c.

Referenced by ffmpeg_cleanup().

copy_ts_first_pts

int64_t copy_ts_first_pts = AV_NOPTS_VALUE

static

Definition at line 181 of file ffmpeg.c.

Referenced by print_report().

int_cb

const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL }

Definition at line 346 of file ffmpeg.c.

Referenced by avio_open2(), dump_attachment(), enc_stats_get_file(), ff_network_sleep_interruptible(), ff_network_wait_fd_timeout(), ffio_open_whitelist(), ffurl_alloc(), ffurl_open_whitelist(), get_preset_file_2(), ifile_open(), libsrt_network_wait_fd_timeout(), of_add_attachments(), of_open(), print_sdp(), read_binary(), url_alloc_for_protocol(), and zmq_proto_wait_timeout().