FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
Macros | Functions | Variables
ffmpeg.c File Reference

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 "libavformat/avformat.h"
#include "libavdevice/avdevice.h"
#include "libswscale/swscale.h"
#include "libswresample/swresample.h"
#include "libavutil/opt.h"
#include "libavutil/channel_layout.h"
#include "libavutil/parseutils.h"
#include "libavutil/samplefmt.h"
#include "libavutil/colorspace.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 "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"

Go to the source code of this file.

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)
 
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 exit_program (void)
 
void assert_avoptions (AVDictionary *m)
 
static void abort_codec_experimental (AVCodec *c, int encoder)
 
static void update_benchmark (const char *fmt,...)
 
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 int reap_filters (void)
 Get and encode new output from any of the filtergraphs, without causing activity.
 
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 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 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 int64_t video_size = 0
 
static int64_t audio_size = 0
 
static int64_t subtitle_size = 0
 
static int64_t extra_size = 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
 
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 143 of file ffmpeg.c.

Referenced by transcode_init().

Function Documentation

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

Definition at line 999 of file ffmpeg.c.

Referenced by do_video_out(), and flush_encoders().

static int64_t getutime ( void  )
static

Definition at line 3279 of file ffmpeg.c.

Referenced by main(), and update_benchmark().

static int64_t getmaxrss ( void  )
static

Definition at line 3297 of file ffmpeg.c.

Referenced by exit_program().

static void free_input_threads ( void  )
static

Referenced by exit_program(), and transcode().

static int sub2video_get_blank_frame ( InputStream *  ist)
static

Definition at line 173 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 188 of file ffmpeg.c.

Referenced by sub2video_update().

static void sub2video_push_ref ( InputStream *  ist,
int64_t  pts 
)
static

Definition at line 217 of file ffmpeg.c.

Referenced by sub2video_heartbeat(), and sub2video_update().

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

Definition at line 230 of file ffmpeg.c.

Referenced by sub2video_heartbeat(), and transcode_subtitles().

static void sub2video_heartbeat ( InputStream *  ist,
int64_t  pts 
)
static

Definition at line 265 of file ffmpeg.c.

Referenced by process_input().

static void sub2video_flush ( InputStream *  ist)
static

Definition at line 294 of file ffmpeg.c.

Referenced by transcode_subtitles().

void term_exit ( void  )

Definition at line 304 of file ffmpeg.c.

Referenced by assert_file_overwrite(), sigterm_handler(), term_init(), and transcode().

static void sigterm_handler ( int  sig)
static

Definition at line 317 of file ffmpeg.c.

Referenced by term_init().

void term_init ( void  )

Definition at line 326 of file ffmpeg.c.

Referenced by assert_file_overwrite(), and main().

static int read_key ( void  )
static

Definition at line 364 of file ffmpeg.c.

Referenced by check_keyboard_interaction().

static int decode_interrupt_cb ( void *  ctx)
static

Definition at line 419 of file ffmpeg.c.

static void exit_program ( void  )
static

Definition at line 426 of file ffmpeg.c.

Referenced by main().

void assert_avoptions ( AVDictionary *  m)

Definition at line 515 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 524 of file ffmpeg.c.

Referenced by init_input_stream().

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

Definition at line 529 of file ffmpeg.c.

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

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

Definition at line 546 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 650 of file ffmpeg.c.

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

static int check_recording_time ( OutputStream *  ost)
static

Definition at line 661 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 674 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 722 of file ffmpeg.c.

Referenced by transcode_subtitles().

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

Definition at line 793 of file ffmpeg.c.

Referenced by reap_filters().

static double psnr ( double  d)
static

Definition at line 994 of file ffmpeg.c.

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

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 1041 of file ffmpeg.c.

Referenced by transcode_from_filter(), and transcode_step().

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

Definition at line 1115 of file ffmpeg.c.

Referenced by transcode().

static void flush_encoders ( void  )
static

Definition at line 1292 of file ffmpeg.c.

Referenced by transcode().

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

Definition at line 1373 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 1387 of file ffmpeg.c.

Referenced by output_packet().

int guess_input_channel_layout ( InputStream *  ist)

Definition at line 1471 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 1491 of file ffmpeg.c.

Referenced by output_packet().

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

Definition at line 1629 of file ffmpeg.c.

Referenced by output_packet().

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

Definition at line 1735 of file ffmpeg.c.

Referenced by output_packet().

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

Definition at line 1785 of file ffmpeg.c.

Referenced by process_input(), and transcode().

static void print_sdp ( void  )
static

Definition at line 1924 of file ffmpeg.c.

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

Definition at line 1941 of file ffmpeg.c.

static InputStream* get_input_stream ( OutputStream *  ost)
static

Definition at line 1975 of file ffmpeg.c.

Referenced by transcode_init().

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

Definition at line 1982 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 1988 of file ffmpeg.c.

Referenced by transcode_init().

static void report_new_stream ( int  input_index,
AVPacket *  pkt 
)
static

Definition at line 2051 of file ffmpeg.c.

Referenced by process_input().

static int transcode_init ( void  )
static

Definition at line 2066 of file ffmpeg.c.

Referenced by transcode().

static int need_output ( void  )
static

Definition at line 2568 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 2598 of file ffmpeg.c.

Referenced by transcode_step().

static int check_keyboard_interaction ( int64_t  cur_time)
static

Definition at line 2616 of file ffmpeg.c.

Referenced by transcode().

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

Definition at line 2819 of file ffmpeg.c.

Referenced by process_input().

static int got_eagain ( void  )
static

Definition at line 2839 of file ffmpeg.c.

Referenced by transcode_step().

static void reset_eagain ( void  )
static

Definition at line 2848 of file ffmpeg.c.

Referenced by process_input(), and transcode_step().

static int process_input ( int  file_index)
static

Definition at line 2864 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]graphfilter graph to consider
[out]best_istinput stream where a frame would allow to continue
Returns
0 for success, <0 for error

Definition at line 3070 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 3116 of file ffmpeg.c.

Referenced by transcode().

static int transcode ( void  )
static

Definition at line 3158 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 3315 of file ffmpeg.c.

Referenced by main().

int main ( int  argc,
char **  argv 
)

Definition at line 3319 of file ffmpeg.c.

Variable Documentation

const char program_name[] = "ffmpeg"

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

Definition at line 106 of file ffmpeg.c.

const int program_birth_year = 2000

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

Definition at line 107 of file ffmpeg.c.

FILE* vstats_file
static

Definition at line 109 of file ffmpeg.c.

Referenced by do_video_stats(), and exit_program().

const char* const forced_keyframes_const_names[]
Initial value:
= {
"n",
"n_forced",
"prev_forced_n",
"prev_forced_t",
"t",
NULL
}

Definition at line 111 of file ffmpeg.c.

Referenced by transcode_init().

int run_as_daemon = 0
static

Definition at line 124 of file ffmpeg.c.

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

int64_t video_size = 0
static

Definition at line 125 of file ffmpeg.c.

Referenced by cdxl_read_packet(), decode_0(), decode_frame(), do_streamcopy(), do_video_out(), do_video_stats(), flush_encoders(), print_report(), and rpl_read_header().

int64_t audio_size = 0
static

Definition at line 126 of file ffmpeg.c.

Referenced by bfi_read_packet(), bmv_read_packet(), cdxl_read_packet(), do_audio_out(), do_streamcopy(), flush_encoders(), print_report(), read_packet(), rl2_read_header(), rpl_read_header(), and sdl_audio_callback().

int64_t subtitle_size = 0
static

Definition at line 127 of file ffmpeg.c.

Referenced by do_streamcopy(), and print_report().

int64_t extra_size = 0
static

Definition at line 128 of file ffmpeg.c.

Referenced by ape_read_packet(), asf_write_header1(), print_report(), and transcode_init().

int nb_frames_dup = 0
static

Definition at line 129 of file ffmpeg.c.

Referenced by do_video_out(), and print_report().

int nb_frames_drop = 0
static

Definition at line 130 of file ffmpeg.c.

Referenced by do_video_out(), and print_report().

int64_t decode_error_stat[2]
static

Definition at line 131 of file ffmpeg.c.

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

int current_time
static

Definition at line 133 of file ffmpeg.c.

Referenced by main(), and update_benchmark().

AVIOContext* progress_avio = NULL

Definition at line 134 of file ffmpeg.c.

Referenced by opt_progress().

uint8_t* subtitle_out
static

Definition at line 136 of file ffmpeg.c.

Referenced by do_subtitle_out(), and exit_program().

InputStream** input_streams = NULL

Definition at line 145 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 146 of file ffmpeg.c.

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

InputFile** input_files = NULL

Definition at line 147 of file ffmpeg.c.

Referenced by 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 148 of file ffmpeg.c.

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

OutputStream** output_streams = NULL

Definition at line 150 of file ffmpeg.c.

Referenced by new_output_stream(), and open_output_file().

int nb_output_streams = 0

Definition at line 151 of file ffmpeg.c.

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

OutputFile** output_files = NULL

Definition at line 152 of file ffmpeg.c.

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

int nb_output_files = 0

Definition at line 153 of file ffmpeg.c.

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

FilterGraph** filtergraphs

Definition at line 155 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 156 of file ffmpeg.c.

Referenced by check_keyboard_interaction(), configure_complex_filters(), decode_audio(), decode_video(), DEF_CHOOSE_FORMAT(), exit_program(), 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 exit_program(), 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().

const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL }

Definition at line 424 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().

Generated on Sat May 18 2013 19:21:10 for FFmpeg by   doxygen 1.8.2