multimedia converter based on the FFmpeg libraries More...

#include "config.h"
#include <ctype.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>
#include <errno.h>
#include <limits.h>
#include <stdint.h>
#include "libavformat/avformat.h"
#include "libavdevice/avdevice.h"
#include "libswresample/swresample.h"
#include "libavutil/opt.h"
#include "libavutil/channel_layout.h"
#include "libavutil/parseutils.h"
#include "libavutil/samplefmt.h"
#include "libavutil/fifo.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/dict.h"
#include "libavutil/mathematics.h"
#include "libavutil/pixdesc.h"
#include "libavutil/avstring.h"
#include "libavutil/libm.h"
#include "libavutil/imgutils.h"
#include "libavutil/timestamp.h"
#include "libavutil/bprint.h"
#include "libavutil/time.h"
#include "libavutil/threadmessage.h"
#include "libavformat/os_support.h"
#include "libavformat/ffm.h"
#include "libavfilter/avcodec.h"
#include "libavfilter/avfilter.h"
#include "libavfilter/buffersrc.h"
#include "libavfilter/buffersink.h"
#include "ffmpeg.h"
#include "cmdutils.h"
#include "libavutil/avassert.h"

Macros
#define	DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"

Functions
static void	do_video_stats (OutputStream *ost, int frame_size)

static int64_t	getutime (void)

static int64_t	getmaxrss (void)

static void	free_input_threads (void)

static int	sub2video_get_blank_frame (InputStream *ist)

static void	sub2video_copy_rect (uint8_t dst, int dst_linesize, int w, int h, AVSubtitleRect r)

static void	sub2video_push_ref (InputStream *ist, int64_t pts)

static void	sub2video_update (InputStream ist, AVSubtitle sub)

static void	sub2video_heartbeat (InputStream *ist, int64_t pts)

static void	sub2video_flush (InputStream *ist)

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)

void	assert_avoptions (AVDictionary *m)

static void	abort_codec_experimental (AVCodec *c, int encoder)

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

static void	close_all_output_streams (OutputStream *ost, OSTFinished this_stream, OSTFinished others)

static void	write_frame (AVFormatContext s, AVPacket pkt, OutputStream *ost)

static void	close_output_stream (OutputStream *ost)

static int	check_recording_time (OutputStream *ost)

static void	do_audio_out (AVFormatContext s, OutputStream ost, AVFrame *frame)

static void	do_subtitle_out (AVFormatContext s, OutputStream ost, InputStream ist, AVSubtitle sub)

static void	do_video_out (AVFormatContext s, OutputStream ost, AVFrame *in_picture)

static double	psnr (double d)

static void	finish_output_stream (OutputStream *ost)

static int	reap_filters (void)
	Get and encode new output from any of the filtergraphs, without causing activity.

static void	print_final_stats (int64_t total_size)

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

static void	flush_encoders (void)

static int	check_output_constraints (InputStream ist, OutputStream ost)

static void	do_streamcopy (InputStream ist, OutputStream ost, const AVPacket *pkt)

int	guess_input_channel_layout (InputStream *ist)

static int	decode_audio (InputStream ist, AVPacket pkt, int *got_output)

static int	decode_video (InputStream ist, AVPacket pkt, int *got_output)

static int	transcode_subtitles (InputStream ist, AVPacket pkt, int *got_output)

static int	output_packet (InputStream ist, const AVPacket pkt)

static void	print_sdp (void)

static const HWAccel *	get_hwaccel (enum AVPixelFormat pix_fmt)

static enum AVPixelFormat	get_format (AVCodecContext s, const enum AVPixelFormat pix_fmts)

static int	get_buffer (AVCodecContext s, AVFrame frame, int flags)

static int	init_input_stream (int ist_index, char *error, int error_len)

static InputStream *	get_input_stream (OutputStream *ost)

static int	compare_int64 (const void a, const void b)

static void	parse_forced_key_frames (char kf, OutputStream ost, AVCodecContext *avctx)

static void	report_new_stream (int input_index, AVPacket *pkt)

static void	set_encoder_id (OutputFile of, OutputStream ost)

static int	transcode_init (void)

static int	need_output (void)

static OutputStream *	choose_output (void)
	Select the output stream to process.

static int	check_keyboard_interaction (int64_t cur_time)

static int	get_input_packet (InputFile f, AVPacket pkt)

static int	got_eagain (void)

static void	reset_eagain (void)

static int	process_input (int file_index)

static int	transcode_from_filter (FilterGraph graph, InputStream *best_ist)
	Perform a step of transcoding for the specified filter graph.

static int	transcode_step (void)
	Run a single step of transcoding.

static int	transcode (void)

static void	log_callback_null (void ptr, int level, const char fmt, va_list vl)

int	main (int argc, char **argv)

Variables
const char	program_name [] = "ffmpeg"
	program name, defined by the program for show_version().

const int	program_birth_year = 2000
	program birth year, defined by the program for show_banner()

static FILE *	vstats_file

const char *const	forced_keyframes_const_names []

static int	run_as_daemon = 0

static int	nb_frames_dup = 0

static int	nb_frames_drop = 0

static int64_t	decode_error_stat [2]

static int	current_time

AVIOContext *	progress_avio = NULL

static uint8_t *	subtitle_out

InputStream **	input_streams = NULL

int	nb_input_streams = 0

InputFile **	input_files = NULL

int	nb_input_files = 0

OutputStream **	output_streams = NULL

int	nb_output_streams = 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 volatile int	transcode_init_done = 0

static int	main_return_code = 0

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

#define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"

Definition at line 136 of file ffmpeg.c.

Referenced by transcode_init().

Function Documentation

static void do_video_stats	(	OutputStream *	ost,
		int	frame_size
	)

static

Definition at line 1090 of file ffmpeg.c.

Referenced by do_video_out(), and flush_encoders().

static int64_t getutime ( void )

static

Definition at line 3743 of file ffmpeg.c.

Referenced by main(), and update_benchmark().

static int64_t getmaxrss ( void )

static

Definition at line 3761 of file ffmpeg.c.

Referenced by ffmpeg_cleanup().

static void free_input_threads ( void )

static

Referenced by ffmpeg_cleanup(), and transcode().

static int sub2video_get_blank_frame ( InputStream * ist )

static

Definition at line 166 of file ffmpeg.c.

Referenced by sub2video_update().

static void sub2video_copy_rect	(	uint8_t *	dst,
		int	dst_linesize,
		int	w,
		int	h,
		AVSubtitleRect *	r
	)

static

Definition at line 181 of file ffmpeg.c.

Referenced by sub2video_update().

static void sub2video_push_ref	(	InputStream *	ist,
		int64_t	pts
	)

static

Definition at line 210 of file ffmpeg.c.

Referenced by sub2video_heartbeat(), and sub2video_update().

static void sub2video_update	(	InputStream *	ist,
		AVSubtitle *	sub
	)

static

Definition at line 223 of file ffmpeg.c.

Referenced by sub2video_flush(), sub2video_heartbeat(), and transcode_subtitles().

static void sub2video_heartbeat	(	InputStream *	ist,
		int64_t	pts
	)

static

Definition at line 258 of file ffmpeg.c.

Referenced by process_input().

static void sub2video_flush ( InputStream * ist )

static

Definition at line 287 of file ffmpeg.c.

Referenced by transcode_subtitles().

static void term_exit_sigsafe ( void )

static

Definition at line 299 of file ffmpeg.c.

Referenced by sigterm_handler(), and term_exit().

void term_exit ( void )

Definition at line 307 of file ffmpeg.c.

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

static void sigterm_handler ( int sig )

static

Definition at line 319 of file ffmpeg.c.

Referenced by term_init().

void term_init ( void )

Definition at line 328 of file ffmpeg.c.

Referenced by assert_file_overwrite(), and main().

static int read_key ( void )

static

Definition at line 365 of file ffmpeg.c.

Referenced by check_keyboard_interaction().

static int decode_interrupt_cb ( void * ctx )

static

Definition at line 420 of file ffmpeg.c.

static void ffmpeg_cleanup ( int ret )

static

Definition at line 427 of file ffmpeg.c.

Referenced by main().

void assert_avoptions ( AVDictionary * m )

Definition at line 535 of file ffmpeg.c.

Referenced by init_input_stream(), and open_input_file().

static void abort_codec_experimental	(	AVCodec *	c,
		int	encoder
	)

static

Definition at line 544 of file ffmpeg.c.

Referenced by init_input_stream().

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

static

Definition at line 549 of file ffmpeg.c.

Referenced by decode_audio(), decode_video(), do_audio_out(), do_video_out(), and flush_encoders().

static void close_all_output_streams	(	OutputStream *	ost,
		OSTFinished	this_stream,
		OSTFinished	others
	)

static

Definition at line 566 of file ffmpeg.c.

Referenced by write_frame().

static void write_frame	(	AVFormatContext *	s,
		AVPacket *	pkt,
		OutputStream *	ost
	)

static

Definition at line 575 of file ffmpeg.c.

Referenced by do_audio_out(), do_video_out(), and flush_encoders().

static void close_output_stream ( OutputStream * ost )

static

Definition at line 698 of file ffmpeg.c.

Referenced by check_recording_time(), do_streamcopy(), need_output(), and transcode_from_filter().

static int check_recording_time ( OutputStream * ost )

static

Definition at line 709 of file ffmpeg.c.

Referenced by do_audio_out(), do_subtitle_out(), and do_video_out().

static void do_audio_out	(	AVFormatContext *	s,
		OutputStream *	ost,
		AVFrame *	frame
	)

static

Definition at line 722 of file ffmpeg.c.

Referenced by reap_filters().

static void do_subtitle_out	(	AVFormatContext *	s,
		OutputStream *	ost,
		InputStream *	ist,
		AVSubtitle *	sub
	)

static

Definition at line 771 of file ffmpeg.c.

Referenced by transcode_subtitles().

static void do_video_out	(	AVFormatContext *	s,
		OutputStream *	ost,
		AVFrame *	in_picture
	)

static

Definition at line 851 of file ffmpeg.c.

Referenced by reap_filters().

static double psnr ( double d )

static

Definition at line 1085 of file ffmpeg.c.

Referenced by avfilter_register_all(), do_video_stats(), main(), print_report(), and run_psnr().

static void finish_output_stream ( OutputStream * ost )

static

Definition at line 1126 of file ffmpeg.c.

Referenced by process_input().

static int reap_filters ( void )

static

Get and encode new output from any of the filtergraphs, without causing activity.

Returns: 0 for success, <0 for severe errors

Definition at line 1145 of file ffmpeg.c.

Referenced by transcode_from_filter(), and transcode_step().

static void print_final_stats ( int64_t total_size )

static

Definition at line 1228 of file ffmpeg.c.

Referenced by print_report().

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

static

Definition at line 1337 of file ffmpeg.c.

Referenced by transcode().

static void flush_encoders ( void )

static

Definition at line 1502 of file ffmpeg.c.

Referenced by transcode().

static int check_output_constraints	(	InputStream *	ist,
		OutputStream *	ost
	)

static

Definition at line 1580 of file ffmpeg.c.

Referenced by output_packet(), and transcode_subtitles().

static void do_streamcopy	(	InputStream *	ist,
		OutputStream *	ost,
		const AVPacket *	pkt
	)

static

Definition at line 1597 of file ffmpeg.c.

Referenced by output_packet().

int guess_input_channel_layout ( InputStream * ist )

Definition at line 1697 of file ffmpeg.c.

Referenced by add_input_streams(), and decode_audio().

static int decode_audio	(	InputStream *	ist,
		AVPacket *	pkt,
		int *	got_output
	)

static

Definition at line 1717 of file ffmpeg.c.

Referenced by output_packet().

static int decode_video	(	InputStream *	ist,
		AVPacket *	pkt,
		int *	got_output
	)

static

Definition at line 1859 of file ffmpeg.c.

Referenced by output_packet().

static int transcode_subtitles	(	InputStream *	ist,
		AVPacket *	pkt,
		int *	got_output
	)

static

Definition at line 1990 of file ffmpeg.c.

Referenced by output_packet().

static int output_packet	(	InputStream *	ist,
		const AVPacket *	pkt
	)

static

Examples:: transcode_aac.c.

Definition at line 2051 of file ffmpeg.c.

Referenced by encode_audio_frame(), process_input(), and transcode().

static void print_sdp ( void )

static

Definition at line 2193 of file ffmpeg.c.

static const HWAccel* get_hwaccel ( enum AVPixelFormat pix_fmt )

static

Definition at line 2210 of file ffmpeg.c.

Referenced by get_format().

static enum AVPixelFormat get_format	(	AVCodecContext *	s,
		const enum AVPixelFormat *	pix_fmts
	)

static

Definition at line 2219 of file ffmpeg.c.

Referenced by init_input_stream().

static int get_buffer	(	AVCodecContext *	s,
		AVFrame *	frame,
		int	flags
	)

static

Definition at line 2257 of file ffmpeg.c.

Referenced by init_input_stream().

static int init_input_stream	(	int	ist_index,
		char *	error,
		int	error_len
	)

static

Definition at line 2267 of file ffmpeg.c.

static InputStream* get_input_stream ( OutputStream * ost )

static

Definition at line 2310 of file ffmpeg.c.

Referenced by transcode_init().

static int compare_int64	(	const void *	a,
		const void *	b
	)

static

Definition at line 2317 of file ffmpeg.c.

Referenced by parse_forced_key_frames().

static void parse_forced_key_frames	(	char *	kf,
		OutputStream *	ost,
		AVCodecContext *	avctx
	)

static

Definition at line 2323 of file ffmpeg.c.

Referenced by transcode_init().

static void report_new_stream	(	int	input_index,
		AVPacket *	pkt
	)

static

Definition at line 2386 of file ffmpeg.c.

Referenced by process_input().

static void set_encoder_id	(	OutputFile *	of,
		OutputStream *	ost
	)

static

Definition at line 2401 of file ffmpeg.c.

Referenced by transcode_init().

static int transcode_init ( void )

static

Definition at line 2442 of file ffmpeg.c.

Referenced by transcode().

static int need_output ( void )

static

Definition at line 3030 of file ffmpeg.c.

Referenced by transcode().

static OutputStream* choose_output ( void )

static

Select the output stream to process.

Returns: selected output stream, or NULL if none available

Definition at line 3060 of file ffmpeg.c.

Referenced by transcode_step().

static int check_keyboard_interaction ( int64_t cur_time )

static

Definition at line 3078 of file ffmpeg.c.

Referenced by transcode().

static int get_input_packet	(	InputFile *	f,
		AVPacket *	pkt
	)

static

Definition at line 3264 of file ffmpeg.c.

Referenced by process_input().

static int got_eagain ( void )

static

Definition at line 3284 of file ffmpeg.c.

Referenced by transcode_step().

static void reset_eagain ( void )

static

Definition at line 3293 of file ffmpeg.c.

Referenced by process_input(), and transcode_step().

static int process_input ( int file_index )

static

Definition at line 3309 of file ffmpeg.c.

Referenced by transcode_step().

static int transcode_from_filter	(	FilterGraph *	graph,
		InputStream **	best_ist
	)

static

Perform a step of transcoding for the specified filter graph.

Parameters

[in]	graph	filter graph to consider
[out]	best_ist	input stream where a frame would allow to continue

Returns: 0 for success, <0 for error

Definition at line 3536 of file ffmpeg.c.

Referenced by transcode_step().

static int transcode_step ( void )

static

Run a single step of transcoding.

Returns: 0 for success, <0 for error

Definition at line 3582 of file ffmpeg.c.

Referenced by transcode().

static int transcode ( void )

static

Definition at line 3624 of file ffmpeg.c.

Referenced by main().

static void log_callback_null	(	void *	ptr,
		int	level,
		const char *	fmt,
		va_list	vl
	)

static

Definition at line 3779 of file ffmpeg.c.

Referenced by main().

int main	(	int	argc,
		char **	argv
	)

Definition at line 3783 of file ffmpeg.c.

Variable Documentation

const char program_name[] = "ffmpeg"

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

Definition at line 108 of file ffmpeg.c.

const int program_birth_year = 2000

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

Definition at line 109 of file ffmpeg.c.

FILE* vstats_file

static

Definition at line 111 of file ffmpeg.c.

Referenced by do_video_stats(), and ffmpeg_cleanup().

const char* const forced_keyframes_const_names[]

Initial value:

= {
    "n",
    "n_forced",
    "prev_forced_n",
    "prev_forced_t",
    "t",
    NULL
}

Definition at line 113 of file ffmpeg.c.

Referenced by transcode_init().

int run_as_daemon = 0

static

Definition at line 126 of file ffmpeg.c.

Referenced by check_keyboard_interaction(), main(), and term_init().

int nb_frames_dup = 0

static

Definition at line 127 of file ffmpeg.c.

Referenced by do_video_out(), and print_report().

int nb_frames_drop = 0

static

Definition at line 128 of file ffmpeg.c.

Referenced by do_video_out(), and print_report().

int64_t decode_error_stat[2]

static

Definition at line 129 of file ffmpeg.c.

Referenced by decode_audio(), decode_video(), main(), and transcode_subtitles().

int current_time

static

Definition at line 131 of file ffmpeg.c.

Referenced by main(), and update_benchmark().

AVIOContext* progress_avio = NULL

Definition at line 132 of file ffmpeg.c.

Referenced by opt_progress().

uint8_t* subtitle_out

static

Definition at line 134 of file ffmpeg.c.

Referenced by do_subtitle_out(), and ffmpeg_cleanup().

InputStream** input_streams = NULL

Definition at line 138 of file ffmpeg.c.

Referenced by add_input_streams(), init_input_filter(), new_audio_stream(), new_output_stream(), open_input_file(), and open_output_file().

int nb_input_streams = 0

Definition at line 139 of file ffmpeg.c.

Referenced by add_input_streams(), check_keyboard_interaction(), ffmpeg_cleanup(), init_input_filter(), open_input_file(), open_output_file(), transcode(), and transcode_init().

InputFile** input_files = NULL

Definition at line 140 of file ffmpeg.c.

Referenced by configure_input_audio_filter(), configure_input_video_filter(), init_input_filter(), open_input_file(), open_output_file(), opt_map(), opt_map_channel(), opt_target(), and sub2video_prepare().

int nb_input_files = 0

Definition at line 141 of file ffmpeg.c.

Referenced by add_input_streams(), dump_attachment(), ffmpeg_cleanup(), init_input_filter(), open_input_file(), open_output_file(), opt_map(), opt_map_channel(), opt_target(), print_final_stats(), reset_eagain(), and transcode_init().

OutputStream** output_streams = NULL

Definition at line 143 of file ffmpeg.c.

Referenced by new_output_stream(), and open_output_file().

int nb_output_streams = 0

Definition at line 144 of file ffmpeg.c.

Referenced by check_keyboard_interaction(), choose_output(), close_all_output_streams(), ffmpeg_cleanup(), flush_encoders(), got_eagain(), need_output(), new_output_stream(), open_output_file(), output_packet(), print_final_stats(), print_report(), process_input(), reap_filters(), reset_eagain(), transcode(), transcode_init(), and transcode_subtitles().

OutputFile** output_files = NULL

Definition at line 145 of file ffmpeg.c.

Referenced by configure_output_audio_filter(), configure_output_video_filter(), and open_output_file().

int nb_output_files = 0

Definition at line 146 of file ffmpeg.c.

Referenced by ffmpeg_cleanup(), get_ost_filters(), new_output_stream(), open_output_file(), print_final_stats(), print_sdp(), transcode(), and transcode_init().

FilterGraph** filtergraphs

Definition at line 148 of file ffmpeg.c.

Referenced by configure_complex_filters(), DEF_CHOOSE_FORMAT(), open_output_file(), opt_filter_complex(), and opt_filter_complex_script().

int nb_filtergraphs

Definition at line 149 of file ffmpeg.c.

Referenced by check_keyboard_interaction(), configure_complex_filters(), decode_audio(), decode_video(), DEF_CHOOSE_FORMAT(), ffmpeg_cleanup(), open_output_file(), opt_filter_complex(), opt_filter_complex_script(), and transcode_init().

volatile int received_sigterm = 0

static

Definition at line 313 of file ffmpeg.c.

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

volatile int received_nb_signals = 0

static

Definition at line 314 of file ffmpeg.c.

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

volatile int transcode_init_done = 0

static

Definition at line 315 of file ffmpeg.c.

Referenced by decode_interrupt_cb(), and ffmpeg_cleanup().

int main_return_code = 0

static

Definition at line 316 of file ffmpeg.c.

Referenced by main(), and write_frame().

const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL }

Definition at line 425 of file ffmpeg.c.

Referenced by dump_attachment(), get_preset_file_2(), open_input_file(), open_output_file(), opt_progress(), read_ffserver_streams(), and url_alloc_for_protocol().

Macros

Functions

Variables

Detailed Description

Macro Definition Documentation

Function Documentation

Variable Documentation